Editing M1 carbine (section)

===Ammunition===
The [[.30 Carbine]] cartridge is essentially a rimless version of the obsolete [[.32 Winchester Self-Loading]] cartridge introduced for the [[Winchester Model 1905|Winchester Model 1905 rifle]].<ref name="BAR"/> The propellant was much newer, though, taking advantage of chemistry advances. As a result, the .30 Carbine cartridge is approximately 27% more powerful than its parent cartridge. A standard .30 Carbine ball bullet weighs 110 grains (7.1&nbsp;g), a complete loaded round weighs 195 grains (12.6&nbsp;g) and has a muzzle velocity of {{convert|1,990|ft/s|m/s|abbr=on}} giving it 967&nbsp;ft·lbf (1,311 joules) of energy, when fired from the M1 carbine's {{convert|17.75|in|abbr=on}} barrel.

In comparison, the [[.30-06 Springfield]] ball round used by the M1 Garand is almost three times as powerful as the .30 Carbine, while the carbine round is twice as powerful as the [[.45 ACP]]-caliber [[Thompson submachine gun]] in common use at the time. As a result, the carbine offers much better range, accuracy and penetration than those submachine guns. The M1 carbine is also half the weight of the Thompson and fires a lighter cartridge. Therefore, soldiers armed with the carbine can carry much more ammunition than those armed with a Thompson.<ref name="George, John 1981 p. 394"/>

Categorizing the M1 carbine series has been the subject of much debate. Although commonly compared to the later German [[Sturmgewehr 44|StG 44]] and Russian [[AK-47]], the M1 and M2 carbines are under-powered and outclassed.<ref name="Rottman_Green"/> Instead, the carbine falls somewhere between the submachine gun and assault rifle and could be called a precursor of the [[personal defense weapon]] since it fulfilled a similar role.<ref name="George, John 1981 p. 394"/>

One characteristic of .30 caliber Carbine ammunition is that from the beginning of production, [[Centerfire ammunition#Primer chemistry|non-corrosive primers]] were specified. This was the first major use of this type of primer in a military firearm. Because the rifle had a closed gas system, not normally disassembled in the field, corrosive primers would have led to a rapid deterioration of the function of the gas system.<ref name="The_AmericanRifleman_to_War">{{cite book |last1=Roberts |first1=Joseph B. |title=The American rifleman goes to war: The guns, troops, and training of World War II as reported in NRA's magazine |date=1992 |publisher=National Rifle Association of America |page=20 |edition=First |isbn=0-935998-63-2 }}</ref>  The use of non-corrosive primers was a novelty in service ammunition at this time.<ref name="Dunlap">{{cite book |author1=Dunlap, Roy F. |title=Ordnance Went Up Front|publisher=R&R Books |date=1993 |pages=240, 293–297|edition=1st|url=https://www.abebooks.com/servlet/BookDetailsPL?bi=30503157727&tab=1&searchurl=sortby%3D17%26tn%3Dordnance%2Bwent%2Bup%2Bfront&cm_sp=snippet-_-srp1-_-seller6}}</ref>  Some failures to fire were reported in early lots of .30 caliber Carbine ammunition, attributed to moisture ingress of the non-corrosive primer compound.<ref name="Shore, C. 1988 pp. 191-195"/>