With a recoil less than half that of the. The heat build up would be substantially lower than even the Pedersen, which was already only 60% of the heat build up of the. 30 carbine) and an 18 inch barrel with a 108 grain/7 gram bullet with a rate of fire around 400-500rpm and a heavy barrel and chromed bore so that it wouldn't heat up/wear too much (worked for the Bren gun to the point that only one barrel was needed per gun that needed to be replaced something like every 50,000 rounds). 30-06 case and using 1938 vintage ball powder (like was used in the. My thought was a 6.35x39mm using a chopped down. 25 caliber around that speed (depending on the bullet weight). 25-3000 it's ironic you said that because I was also thinking in that direction based off of a study done about future rifle calibers for France that settled on something around. 25-3000 it could really work.Įliminate the weird semi-auto function for an open bolt only though and modernize the. Click to expand.Normally I'm against the FG-42 because of it's complexity, but in something with say the power of the.

Kbsp wz. 1938m