Caseless ammo will never work. Case has two very important features which are really hard to solve with other means; protection of the propellant from the elements and forming a gas seal when the gun is fired.
If the US armed forces were to replace the 5...
Angel Adams
Liam Rivera
You would know both of those problems have already been solved if you had spent 5 minutes googling it.
Cooper Davis
6.8 SPC has atrocious velocity even at the muzzle. It gets 2600 FPS maximum.
William Brooks
I would say the top three are 6mm saw, 280 british, and 224 valkyrie
Dominic Thompson
>and performs extremely well in differing barrel lengths, doen to 8"
An AKs-74u with 7n6 really doesn't perform much better than a Mk.18 with M855A1, they're pretty comparable, in that they work for CQB ranges, but they're really bad at any longer distances, also both being loud and bright as shit, which isn't the best for house clearing, that shit will disorient you.
Developing better loads for each would basically put both of them on the same level anyway.
Lincoln Campbell
>That's just a matter of the projectile, not the cartridge as a whole.
Not really. The 5.56 cartridge is constrained by a relatively long case/short OAL. The 5.56 case is about 5mm longer (not 6mm, 5.45x39 is really closer to 40), but the OAL is within half a millimeter. This means 5.56 is stuck with short ogive bullets -- look how retarded-looking m855a1 is, it has at least as much bearing surface as ogive.
You simply can't put a decent long-range projectile in 5.56x45.
Asher Kelly
Since the US never signed the Hague Conventions, I'd say get expanding rounds. Guarantees that a drugged up Terry Talibunny gets ripped apart.
Josiah Walker
6.5 Swe or Creed.
Luis Miller
I dreadfully hope for a replacement for 5.56
I'll take anything, even fucking 6.8, so long as there is wide spread military, police, and industry adoption, as well as simple barrel and bolt conversion kits for my AR.