GrumpyOlGuy
Member
- Joined
- Aug 26, 2018
- Messages
- 15
OCD caused me to try this: 110gr BC=.273. With ~1970fps at the muzzle, gives 9mm parabellum muzzle velocity and energy at 350+yds (about 100+ yards greater range than the standard carbine). Drops to subsonic at about 400 yds.
Uses 223 parent case, shortened 300 BO dies (to form case), and a 300 BO reamer with a standard barrel. Test results so far -- cycles ok with 12.0 to 13.0 gr WC820; ~2-2.5 MoA.
Why? Just to show what could've been done in 1940? Would've been the 1st assault rifle (Just sayin').