Military Guns and Ammunition
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This is intended for people interested in the subject of military guns and their ammunition, with emphasis on automatic weapons.
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Exploring The Design Space Ammunition <20mm
From: stancrist
27/7/15
renatohm said...
NathanielF said...
the biggest factor here is additional magazine weightWould poly mags change the argument a bit?
There's a good chance that a future rifle would use polymer magazines. If so, then I don't see magazine weight being a significant issue.
More important, IMO, is magazine size. The longer (front to rear) the magazine is, the worse the ergonomics, especially for soldiers with smaller hands. The length is also critical in determining how many mags can be worn in chest pouches.
From: stancrist
27/7/15
autogun said...
stancrist said...
autogun said...
...bearing in mind that MGs are always likely to have longer barrels than IWs...Two words that should never be used -- "never" and "always" ;^)
Basic English comprehension: "always likely to have" does not mean the same as "always have" - it's describing a probability.
Yup. But is "always likely to have" even an accurate statement?
M1 rifle, 24" bbl; M1919 machine gun, 24" bbl
M14 rifle, 22" bbl; M60 machine gun, 22" bbl
M16 rifle, 20" bbl; M249 machine gun, 18" barrel
M4 carbine, 14.5" bbl; M249 machine gun, 14.5" bbl
- Edited 27 July 2015 13:36 by stancrist
From: renatohm
27/7/15
Thanks for the detailed answer.
In short: life is compromise, and one has to make the optimal choices based on one's needs.
And as Stan points out, mag lenght is important in ergonomics, especially for warfighters with smaller hands, and for storing, for all warfighters.
Being a little pickier: do you have any idea how much volume is lost when using poly cases?
From: John Wouters (johnwouters7)
27/7/15
What I would find interesting is a 7.62 round based on the existing case for a longer ogive projectile. Either by dropping the length of the case to about 45/47 mm and perhaps using a rebated rim case like the .284 winchester. Your .224 scaled up to 7.62 is looking around .27 and 9.8ish grams. An MV of 840 mps should be practical with the larger case at least.
From: H_Minus
27/7/15
stancrist said...
M1 rifle, 24" bbl; M1919 machine gun, 24" bbl
M14 rifle, 22" bbl; M60 machine gun, 22" bbl
M16 rifle, 20" bbl; M249 machine gun, 18" barrel
M4 carbine, 14.5" bbl; M249 machine gun, 14.5" bbl
Others you left out:
M16 rifle, 20" bbl; M60 machine gun, 22" bbl
M4 carbine, 14.5" bbl; M240 machine gun, 24.5" bbl
M4 carbine, 14.5" bbl; M249 machine gun, 18" bbl
- Edited 27 July 2015 19:03 by H_Minus