Editing M1903 Springfield rifle

{{rifle
|name= Rifle, Caliber .30, M1903
|image= Rifle Springfield M1903A3.jpg
|caption= 
|origin= [[United States]]
|type= [[Bolt-action]] [[service rifle]]
<!-- Specifications -->
|length= 44.9 in (1,140 mm)
|barrel= 24 in (610 mm)
|weight= ~8.7 lb (3.9 kg); depending on wood density
|cartridge= [[.30-03|.30-03 Springfield]]; [[.30-06 Springfield]]
|caliber=.30
|action= [[Bolt-action]]
|ROF= 
|muzzle_velocity= 2,800 ft/s (853 m/s)
|range= 
|max_range= 
|feed= 5-round [[stripper clip]], internal [[Magazine (firearm)|box magazine]]
|sights=Leaf rear sight, barleycorn front<br />''M1903A3'': Aperture rear sight, barleycorn front
<!-- Service history -->
|service= 1903–1957
|used_by= [[United States]]
|wars= World War I, World War II, Korean War, Vietnam War (limited)
<!-- Production history -->
|designer= [[Springfield Armory]]
|design_date=1900
|manufacturer=
|unit_cost=
|production_date=
|number= 
|variants= See [[M1903 Springfield#Variants|Variants]]
|notes= 
}}
The '''Springfield M1903''', formally the '''United States Rifle, Caliber .30, Model 1903''', is an [[United States|American]] [[Magazine (firearm)|magazine-fed]], [[bolt-action]] [[rifle]] used primarily during the first half of the 20th century. 

It was officially adopted as a United States military [[service rifle]] on [[June 19]]th [[1903]], and was officially replaced as a service rifle by the faster-firing, [[Semi-automatic firearm|semi-automatic]] [[M1 Garand rifle|M1 Garand]], starting in [[1936]]. The M1903 saw notable use in World War I and World War II, and some cases in Vietnam. It was also used as a [[sniper rifle]] in World War II, Korea and Vietnam. Furthermore, it remains in use as a civilian firearm and among some drill teams.

==History==
===Background===
The 1903 adoption of the Springfield bolt-action was preceded by nearly 30 years of struggle and politics, as well as lessons learned from the recently adopted U.S. Models 1892-98 [[Krag-Jørgensen|Krag]] and contemporary German [[Mauser]] bolt-action rifles.  The M1903 not only replaced the various versions of the Krag, but also the [[Lee Model 1895]] and [[M1885 Remington-Lee]] used by the U.S. Navy and Marine Corps, as well as the remaining trap-door Springfields (Model 1870). While the Krag had been issued in both a long rifle and [[carbine]], there would be only one Springfield type; this was a break from the existing trend.

The two main problems usually cited with the Krag were its slow-to-load magazine and its inability to handle higher chamber pressures for higher-velocity rounds. Which of these was more important is a matter of debate, as is the impact of the Mausers encountered in the 1898 Spanish American War. What is known is that the Mauser design that competed in the 1890s competition with a stripper clip magazine was defeated by the Krag (as well as many other designs) with its rotary magazine reloaded one [[cartridge]] at a time. Note that a special sort of stripper clip for reloading the Krag magazine all at once came later. Also, the Mauser model in the trial had about the same muzzle velocity as the Krag. 

After the Krag's adoption, however, there was a trend to greater cartridge power, such as the Model 1893 Spanish Mauser, which generated a flatter trajectory, and a higher muzzle velocity (about 2300 ft/s) from the 7 x 57 mm Spanish Mauser cartridge.

The ballistics of the .30-40 Krag and the 7 x 57 mm Mauser rounds were actually not that much different. Both cartridges had round-nosed bullets; pointed, streamlined bullets (spitzers) were later introduced by Germany. The smokeless powder used by both was an advantage over the older black-powder rifles still used in the war (on both sides of the conflict), such as issued to volunteers and the local militia.
U.S. troops were greatly impressed, however, with the volume of fire that the Spanish troops could produce with their faster-loading Mausers, compared to the U.S. Krags.

The U.S. Army attempted to introduce a higher-velocity cartridge in [[1899]] for the existing Krags, but its single locking lug on the bolt could not handle the extra chamber pressure. A stripper-clip arrangement was also worked out for loading the Krag. It was around the same time that work on a new rifle began. 

The fact that the U.S. was adopting a new rifle after only a few years was not actually much of an oddity, as many nations were switching to new firearms in this general period.

===Late 1800s: the lead up to adoption===
The situation from which the 1903 resulted itself stems from a previous period going back nearly thirty years.  Since the late 1870s, the Army had been looking for a replacement for the existing service rifle of the average soldier, the trap-door Springfield (i.e. the Model 1873). The Army was rather underfunded during the period so the regular soldiers were usually stuck with model 1873, though a variety of bolt-action rifles and carbines were also used to varying degrees, and more wealthy soldiers often bought commercial weapons.  The Army budget in 1865 was over a million dollars, but this had rapidly tapered down with the end of the U.S. Civil War; the Army budget in 1892 was less than $50,000 a year. The need for a new rifle had become apparent, especially with a switch to a smokeless powder going on (started by the French in 1886). The bolt action Lee rifle in 1879, which had a newly invented detachable box magazine, was adopted in the 1880s in limited numbers by the Navy. A few hundred 1882 Lee Models (M1882 Remington-Lee) were given a trial by the Army during the 1880s, though it was not formally adopted. The Navy went on to field the 1885 model, and later, a rather different style Lee 1895 Model (a straight pull type). Both the 1895 and 1885 would see service in the Spanish American War along with the Army weapons. The detachable box magazine used on the Lee rifle was invented by [[James Paris Lee]], and would be very influential on later designs. Other advancements like the aforementioned smokeless powder had made it clear that a replacement was needed. This led to the 1890s' competitions that resulted in selection of the Krag over 40 other types (including the Mauser design). The Krag types entered production in [[1894]] after a delay, but would be officially replaced about ten years later by the M1903. The Krag rifles were slowly replaced during the next decade as 1903 rifles became available.

There are various reasons given about why development started on a Mauser based design; the rifle is often said to have been developed due to observations of actions during the Spanish American War, in which [[Spain|Spanish]] troops were armed with [[Mauser]] Model 93 rifles.  As mentioned, these were deemed superior to the U.S. [[Krag-Jørgensen]] rifles, either attributed to their magazine design or the ballistics of the round. The Mausers were fed from a stripper clip, which tends to allow for faster reloading. While the U.S had actually fielded some removable magazine fed weapons earlier in 19th century (such as the Spencer, or the various Lee models), the Krag was the existing Army service rifle and its 5 round magazine had to be reloaded one cartridge at time. The other issue was that while the Mauser trialled in the 1890s had a muzzle velocity of about 2000 ft/s (600 m/s) (about the same as the Krag), the latest designs being adopted by other countries had gone to higher velocities and the Krag could not handle the increased loads for higher velocity. The extent of the actual effect of the Mausers on the war is a matter of debate, for example only the Spanish regulars had the Mauser 93, while other troops had older single-shot weapons. Whatever the extent, the Army leveraged the events to garner support for a new rifle.

===Adoption===
[[Image:Springfield 1903 azione.jpg|thumb|right|250px|]]
[[Image:Springfield 1903 alzo.jpg|thumb|right|250px|]]

The basic time line is that work began on creating a rifle that could handle higher loads and adopted some of Mauser's features, began around the turn of the century by Springfield, with a prototype produced in [[1900]], and going into production in 1903, thus gaining its nomenclature. There was actually an interim rifle that almost entered production, the Model 1901. Springfield was sure enough that the Model 1901 would be accepted that they began making some parts, but it was not accepted and further changes were asked for. The design was further modified and accepted, type classified and entering production in 1903. 

The War Department had exhaustively studied and dissected several examples of the Mauser Model 93 rifle captured during the Spanish-American War, and combined features of both the U.S. Krag Rifle Models 1894-1898, and the Mauser Model 93, to produce the new U.S. Springfield Rifle, Model 1903. Still, the 1903's used so many design features from the German Mauser that the U.S. government paid royalties to [[Mauser]]werke. 

By [[January 1905]] over 80,000 of these rifles had been produced at the federally-owned [[Springfield Armory]].  However, President Theodore Roosevelt objected to the design of the bayonet used (a rod-type) as being too flimsy for combat.  All the rifles to that point consequently had to be re-tooled for a knife-type [[bayonet]], called the [[M1905 bayonet|M1905]]. A new improved Model 1904 sight was also added.

The retooling was almost complete when it was decided another change would be made. It was to incorporate improvements discovered during experimentation in the interim, most notably the use of pointed ammunition, first adopted by the French in the 1890s and later other countries.  The American rounds with this feature to be used in the Springfield were designated "Cartridge, Ball, Caliber .30, Model of 1906"; this is the famous [[.30-06 Springfield|.30-06]] ammunition used in countless small arms to the present day. The rifle's sights were again redone to compensate for the speed and trajectory of the new cartridges. The round itself was based on the .30-03, but rather than a 220-grain (14 g) bullet fired at 2,300 ft/s (700 m/s), it had a 150-grain (9.7 g) pointed bullet fired at 2,800 ft/s (810 m/s); the case neck was a fraction of an inch shorter as well.

Additionally, tests revealed that the design was effective with a short, "cavalry-style" barrel of 24 inches (610 mm) in length, so the decision was made to issue shorter rifles to the infantry as well, an innovation during a time when long rifles for infantry were the norm.

As a whole, these changes led to a vastly efficient and deadly shoulder arm.  Some dubbed it the "weapon of the silent death," since a person could be struck by its bullet before ever hearing the weapon's report.

===World War I===
By the time of U.S. entry into World War I, 843,239 of these rifles had been produced at [[Springfield Armory]] and [[Rock Island Arsenal]]. Pre-war production utilized questionable metallurgy.  Some receivers were improperly subjected to excessive temperatures during the forging process.  The carbon could be "burnt" out of the steel producing a brittle receiver.<ref>''Canfield, February 2008, p. 13</ref>  Towards the end of the war, Springfield turned out the Model 1903 Mark I.  The Mark I has a cut on the left hand side of the receiver meant to act as an ejection port for the [[Pedersen device]], a specialized insert that replaced the bolt and allowed the user to fire .30 caliber pistol cartridges semi-automatically from a detachable magazine.  The stock was also slightly cut down on the left side to clear the ejection port.  In all other respects, the Mark I is identical to the 1903.  Temperature control during forging was improved prior to Mark I production.  The receiver alloy was toughened by addition of nickel after Mark I production.

===World War II===
World War II saw new production of the Springfield at private manufacturers [[Remington Arms]] and Smith-Corona Typewriter. Remington began production of the M1903 in [[September 1941]], at serial number 3,000,000, using old tooling from the [[Rock Island Arsenal]] which had been in storage since [[1919]]. The very early rifles are almost indistinguishable from 1919-made Rock Island rifles. As the already worn tooling began to wear beyond use Remington began seeking Army approval for a continuously increasing number of changes and simplifications to both speed up manufacture and improve performance. The milled parts on the Remington M1903 were gradually replaced with stamped parts until, at about serial number 3,330,000, the Army and Remington recognized that a new model name was appropriate. Other features of the M1903, such as high-grade walnut stocks with finger grooves, were replaced with less expensive but serviceable substitutes. Most parts made by Remington, stamped or milled, were marked with an "R". 

The M1903 became the M1903/A3. The most noticeable visual difference in the M1903/A3 was the replacement of the barrel-mounted rear sight with a smaller, simpler "peep" rear sight mounted on the rear of the receiver. All stock furniture was stamped metal.  In early [[1942]] Smith/Corona Typewriter Company also began production of the M1903/A3 at its plant in Rochester, NY. Smith/Corona parts are usually identified by the absence of markings (Smith/Corona bolts are sometimes marked with an "X" on top of the bolt handle root).  Original production rifles at Remington and Smith/Corona had a dark gray/black finish similar to the Parkerizing of late World War I. Beginning in late 1943 a lighter gray/green Parkerizing finish was used. This later finish was also used on arsenal repaired weapons. It is somewhat unusual to find a World War I or early World War II M1903 with its original dated barrel. Much, if not all, WW2 .30-06 ammunition used a corrosive primer which left corrosive salts in the barrel. If not removed by frequent and proper barrel cleaning these residues could cause pitting and excessive wear. In the jungle fighting on various Pacific islands cleaning was sometimes lax and the excessive moisture compounded the corrosive action of the residue.

The M1903 and the M1903A3 rifle were used in combat alongside the M1 Garand by the U.S. military during World War II and saw extensive use and action in the hands of U.S. troops in Europe, North Africa, and the Pacific. The US Marines were initially armed with M1903 rifles in early battles in the Pacific, such as the Battle of Guadalcanal. The US Army Rangers were also a major user of the M1903 and the M1903A3 during World War II with the Springfield being preferred over the M1 Garand for commando missions. By mid-war, however, US combat troops had been re-equipped with the M1 Garand. However, some front-line infantry units in both the US Army and the US Marine Corps still used the M1903 and the M1903A3 despite large quantities of M1 Garands being made available to front-line troops during the later years of World War II.

It remained in service for [[sniper]]s (using the '''M1903A4'''), grenadiers (using a spigot type rifle [[grenade launcher]]) and "scout snipers", a type of infantry scout.  Military Police also continued to use M1903s and M1903A3s throughout the war.  The M1903A4 sniper variant's magazine could only be loaded one cartridge at a time, due to the scope position directly over the action, which prevented charging the magazine with 5 round [[stripper clip]]s.

Following [[August 1943]], the Free French were re-equipped by the United States primarily with Springfield M1903 and M1917 Enfield rifles, making the Springfield M1903 rifle one of the primary rifles of French forces until the end of the war.

Springfield M1903 rifles captured by the Germans were designated '''Gewehr 249(a).'''

The 1st Brazilian Infantry Division, operating in the 5th Army in Italy was equipped with Springfield M1903 and rifles.

===Korea===
The M1903A4 was slowly phased out during the Korean war by the Army, but saw extensive use in the Marine Corps in the form of the M1941 Sniper rifle. This new rifle was simply equipped with a very long and powerful Unertl 7.8x (as compared to the  M73B1 2.5X telescopic sights issued with the army's M1903A4) variant type scope. It was used in situations when the range to the target simply exceeded that of the Marines' M1C and M1D sniper rifles, which were effective to about 500 yards (460 m). In some rare cases, kills from up to 1,000 yards (910 m) were reported by Marines using the M1941 sniper rifles.  Marine Corps armorers continued to rebuild some M1903 sniper rifles as late as the early stages of U.S. involvement in the Vietnam War.

Perhaps somewhat eccentrically, General Matthew Ridgway, supreme commander of the UN Eighth Army in the Korean War (after Douglas MacArthur, before Mark Wayne Clark), carried an M1903A3 along with him during the war.  During World War II, he had carried an M1903, and commanded the US 82nd Airborne Division.

===Post Korean War Service===
After the Korean War, active service (as opposed to drill) use of the M1903 was rare.  Still, some numbers of them remained in USMC sniper use as late as the Vietnam War.  The U.S. Navy also continued to carry some stocks of M1903A3s on board ships, for use as anti mine rifles.

===Today===
Due to its balance, it is still popular with various military drill teams and color guards, most notably the U.S. Army Drill Team. M1903 rifles (along with the M1 Garand) are also common at high school Junior Reserve Officer Training Corps (JROTC) units to teach weapons handling and military drill procedures to the cadets.  JROTC units use M1903s for regular and inter-school competition drills, including elaborate exhibition spinning routines similar to a majorette spinning a baton.  Exhibition teams often use fiberglass stocks in place of wooden stocks, which are heavier and more prone to breakage when dropped. The M1903 is also the standard parade rifle of the Virginia Tech Corps of Cadets, which has over six hundred M1903s, a very small percentage of which are still fireable.

For safety reasons, JROTC M1903s are made permanently unable to fire by having a metal rod welded into the barrel, or having it filled with lead, and soldering the the bolt and welding the magazine cutoff switch in the ON position.

In [[1977]], the Army located a rather large cache of un-issued M1903A3 rifles which were then issued to JROTC units as a replacement for their previously issued [[M1 Garand rifle|M1 Garand]] and [[M14 rifle|M14]] rifles, which were then returned to Army custody due to concerns about potential break-ins at high school JROTC armories.  After the creation of the privatized [[Civilian Marksmanship Program]] (CMP) in [[1996]], the Army has located additional M1903 and M1903A3 rifles which have been made available for sale to eligible [[CMP]] customers. Currently, the CMP does not sell M1903s, but they are planning sales in 2011.

==Specifications==

The US rifle, Model of 1903 was 44 7/8 inches (1.098 m) long and weighed 8 lb 11 oz (3.95 kg). A bayonet could be attached; the [[M1905 bayonet]] blade was 16 inches (406 mm) long and weighed 1 lb (0.45 kg). After the 1906 re-fit, the rifle fired the .30-[[caliber]] model 1906 [[cartridge]] (.30-06 cartridge). There were four standard types of cartridge:

*'''Ball'''&mdash; consisted of a brass case or shell, primer, a charge of smokeless powder, and the bullet. The bullet had a sharp point called a [[spitzer bullet]], and was composed of a lead core and a jacket of cupro nickel, and weighed 150 grains (9.7 g). The bullet of this cartridge, when fired from the rifle, had an initial velocity of 2,700 feet (820 m) per second (820 m/s).
*'''Blank'''&mdash; contained a paper cup instead of a bullet. It is dangerous up to 33 yards (30 m).
*'''Guard'''&mdash; had a smaller charge of powder than the ball cartridge, and five cannelures encircle the body of the shell at about the middle to distinguish it from ball cartridges. It was intended for use on guard or in riot duty, and it gave good results up to 200 yards (180 m). The range of 100 yards (90 m) required a sight elevation of 450 yards (410 m), and the range of 200 yards (180 m) required an elevation of 645 yards (590 m).
*'''Dummy'''&mdash; this was tin-plated and the shell was provided with six longitudinal corrugations and three circular holes. The primer contains no percussion composition. It was intended for drill purposes to accustom the soldier to the operation of loading the rifle.

The rifle was sighted for 2,500 yd (2,300 m) and had a point-blank range of 500 yards (457 m). The maximum range of the ball cartridge, when elevated at an angle of 45°, was 4,890 yd (4.47 km), or 2.77 miles<!--strange numbers-->.

The rifle was a magazine-fed clip-loader and could fire at a rate of 20 shots per minute. Each stripper clip contained 5 cartridges, and standard issue consisted of 12 clips carried in a cloth bandolier. When full the [[bandolier]] weighed about 3 lb 14 oz (1.76 kg). Bandoliers were packed 20 in a box, for a total of 1,200 rounds. The full box weighed 100 pounds (45 kg).

The following table gives the approximate maximum penetration in various materials.

{| border="1" cellspacing="0" cellpadding="3" align="center"
|+'''Penetration of a rifle bullet'''.
|-
!Material
!At 200 yards<br> 180 meters
!At 600 yards<br> 550 meters
|-
|Commercial steel
|align="right"|0.30 in <br>0.76 cm
|align="right"|0.01 in <br>0.25 cm
|-
|One-inch broken stone, gravel
|align="right"|4.80 in <br>12.2 cm
|align="right"|4.29 in <br>10.9 cm
|-
|Hard coal between 1-inch (25 mm) boards
|align="right"|9 in <br>23 cm
|align="right"|7 in <br>18 cm
|-
|Brick masonry, cement
|align="right"|2.20 in <br>5.6 cm
|align="right"|1.2 in <br>3.0 cm
|-
|Brick masonry, lime
|align="right"|2.4 in <br>6.1 cm
|align="right"|1.2 in <br>3.0 cm
|-
|Sand, dry
|align="right"|9 in <br>23 cm
|align="right"|12.2 in <br>31 cm
|-
|Concrete, 1-3-5
|align="right"|3.0 in <br>7.6 cm
|align="right"|2.0 in <br>5.1 cm
|-
|Oak
|align="right"|27.2 in <br>69 cm
|align="right"|11.8 in <br>30 cm
|-
|Sand, wet
|align="right"|15.0 in <br>38 cm
|align="right"|13.0 in <br>33 cm
|-
|Pine
|align="right"|26 in <br>66 cm
|align="right"|11.8 in <br>30 cm
|-
|Earth, loam
|align="right"|20.1 in <br>51 cm
|align="right"|16.1 in <br>41 cm
|-
|Grease clay
|align="right"|59.8 in <br>152 cm
|align="right"|31.9 in <br>81 cm
|}

150 rounds concentrated at one spot will break a 9 inch (23 cm) wall of brick masonry at 200 yd (180 m).

The bore of the rifle is 0.30 inches (7.62 mm) in diameter. It was then rifled 0.004 in (0.1 mm) deep, making the diameter from the bottom of one groove to the bottom of the opposite groove 0.30787 in (7.82 mm) of the barrel.

The 1903 rifle included a rear sight leaf that could be used to adjust for elevation. When the leaf was flat, the battle sight appeared on top. This sight was set for 546 yd (499 m)., and was not adjustable. When the leaf was raised it could be adjusted to a maximum extreme range of 2,875 yd (2,629 m). The rear sight could also be adjusted for windage. The 1903A3 rear sight was an aperture sight adjustable both for elevation and windage.

==Variants==
There were four main variants given official nomenclature, though there are a number of important sub-variants:
[[Image:Rifle Springfield M1903.jpg|thumb|300px|M1903]]
[[Image:Rifle Springfield M1903A1.jpg|thumb|300px|M1903 with 'scant' [[stock]]]]
[[Image:Rifle Springfield M1903A4 with M84 sight.jpg|thumb|300px|M1903A4 with M84 sight]]
*'''M1903 (1903)—''' developed for the [[.30-03]] (also known as the .30-45) [[cartridge]]. Used original Type S [[stock]].
**'''M1903 (1905)—''' changed from a rod type bayonet to the knife type Model 1905 bayonet and to the improved Model 1905 sight.
**'''M1903 (1906)—'''  modified again to specifically fire the new M1906 [[.30-06 Springfield|.30-06]] cartridge ("Ball Cartridge, caliber 30, Model of 1906").
**'''M1903 Mark I (~1918)—''' modified for specific use with the [[Pedersen device]].
*'''M1903A1 (1930-1939)—''' changed to a straight stock with different pistol stock grip (Type C stock).<ref>M1903A1 also manufactured by Remington Arms under contract in anticipation of WWII, with Remington producing an estimated 350,000 of these rifles in 1941</ref>
*'''M1903A2 (1930s–40s)—''' basically a stripped A1 or A3 used as a subcaliber rifle with artillery pieces. 
*'''M1903A3 (1942)—''' modified for easier production with stamped metal parts and somewhat different grip and stock (late model Type S stock; no finger grooves).
*'''M1903A4 (1942)—''' an M1903A3 modified to be a sniper rifle using an M73 or M73B1 2.2X [[telescopic sight]] and different stock.
*'''M1903 Bushmaster carbine (1940s)—''' the [[Gun barrel|barrel]] and stock were cut down 18 inches (460 mm) for easier use in Panama; 4,725 such rifles were made. It was a training rifle and  saw no action. After WWII most were dumped into the ocean and surviving pieces are rare.

There are two main other types, various training types, and competition versions such as the [[National Match]] types. Aside from these there are some other civilian versions, experimental versions, and other miscellaneous types. Due to the duration of its service, there is also a range of smaller differences among ones from different periods and manufacturers. 
In regard to its military use, it is important to note that during WWI it was actually outnumbered by the [[M1917 Enfield rifle|M1917 Enfield]] for much of the war. Also, during WW2 many remained in use early on, especially in the Pacific (generally replaced as M1 Garands became available), in addition to service (along with other weapons) as a sniper rifle and to launch [[rifle grenade]]s.

==Literary allusions==
The Springfield is the rifle that Francis Macomber uses in Ernest Hemingway's "''The Short Happy Life of Francis Macomber''". It is also used by the young Rudy Waltz in Kurt Vonnegut's ''Deadeye Dick''.  It figures prominently in ''From Here to Eternity'' by James Jones as soldiers drill and train with it, and fire it at Japanese aircraft on December 7, 1941

==Resources==
{{gun manuals}}
*'''[http://www.gunownersresource.com/manuals/springfield/Springfield_M1903_AT_A3_A4.pdf M1903, M1903A1, M1903A3, M1903A4 Ordanance Maintenance]''' - US Army (.pdf document, 56 pgs, 8.5MB)
These images are also available:
<gallery>
Image:1903A1.jpg|A partial breakdown and parts list for the 1903 A1 & A3
Image:Springfield_1903.gif|Exploded view and parts listing for the Springfield M1903
File:m1903 parts.jpg|Parts breakdown with legend
</gallery>

==Notes==
<references/>

==See also==
*[[Pedersen device]]
*[[Springfield rifle]]
*[[M14 rifle|M14]]
*[[M1 Garand rifle|M1 Garand]]

==References==
*''Engineer Field Manual'', War Department, Document No. 355, 1909.
*''Manual for Noncommissioned Officers and Privates of Infantry of The Army of the United States'', War Department, Document No. 574, 1917. 
*"Bushmaster '03 Carbine," ''American Rifle'' magazine, April 2005, p. 40.

==External links==
*[http://m1903.com/ M1903.com]
*[http://www.snipercountry.com/Articles/SpringfieldM1903.asp SniperCountry.com article on the M1903]
*[http://world.guns.ru/rifle/rfl07-e.htm Springfield M1903 at Modern Firearms]
*[http://144.99.215.51/Data/tmp/objYAsFmXks3WgmXh9DXXTYBjpHeRrj0iQFg2LIUom7xlN3KX73dZtCgWfKNfYlu1xdct7Um1Zcs_uJKz4G3V5w%3D%3D.pdf FM 23-10 Basic Field Manual: U.S. Rifle Caliber .30, M1903, 20 September 1943]
*[http://www.90thidpg.us/Reference/Reference.html 90th Infantry Division Preservation Group] - Reference manual page including several M1903 manuals

[[Category:American .30-06 bolt-action service rifles]]
[[Category:Springfield .30-06 bolt-action rifles]]
@@ Line 181: / Line 181: @@
 The 1903 rifle included a rear sight leaf that could be used to adjust for elevation. When the leaf was flat, the battle sight appeared on top. This sight was set for 546 yd (499 m)., and was not adjustable. When the leaf was raised it could be adjusted to a maximum extreme range of 2,875 yd (2,629 m). The rear sight could also be adjusted for windage. The 1903A3 rear sight was an aperture sight adjustable both for elevation and windage.
-== Safety ==
-=== Low serial numbered rifles ===
-M1903 rifles made before [[February 1918]] utilized [[receivers]] and [[bolts]] which were single heat-treated by a method that rendered some of them brittle and liable to fracture when fired, exposing the shooter to a risk of serious injury.  It proved impossible to determine, without destructive testing, which receivers and bolts were so affected and therefore potentially dangerous.<ref>{{cite web |url=http://thecmp.org/cmp_sales/rifle_sales/m1903-m1903a3/ |title=M1903/M1903A3 |last1= |first1= |last2= |first2= |date= |website= [[Civilian Marksmanship Program]] website |publisher= [[Civilian Marksmanship Program]] |accessdate= 5/17/17 |quote=}}</ref>
-To solve this problem, the Ordnance Department commenced double heat treatment of receivers and bolts.  This was commenced at [[Springfield Armory]] '''at approximately serial number 800,000''' and at [[Rock Island Arsenal]] '''at exactly serial number 285,507'''.  All Springfields made after this change are commonly called "high number" rifles.  Those Springfields made before this change are commonly called "low-number" rifles.
-In view of the safety risk the Ordnance Department withdrew all "low-number" Springfields from active service.  During [[WWII]], however, the urgent need for rifles resulted in the rebuilding and reissuing of many "low-number" as well as "high-number" Springfields.  '''The bolts from such rifles were often mixed during rebuilding, and did not necessarily remain with the original receiver.'''
-Generally speaking, "low number" bolts can be distinguished from "high-number" bolts by the angle at which the bolt handle is bent down.  All "low number"” bolts have the bolt handle bent straight down, perpendicular to the axis of the bolt body.  High number bolts have "swept-back" (or slightly rearward curved) bolt handles.
-A few straight-bent bolts are of the double heat-treat type, but these are not easily identified, and until positively proved otherwise ANY straight-bent bolt should be assumed to be "low number".  All original swept-back bolts are definitely "high number".  In addition, any bolt marked "N.S." (for nickel steel) can be safely regarded as “high number” if obtained directly from [[CMP]] (beware of re-marked fakes).
 ==Variants==