That's what i Figured and no factory 367 max won't but its underloaded. Since it has the same (appromately as in darn close) head size as a 223 then it produces the same amount of bolt thrust at the same pressure. And most loading data and factory stuff isn't even loaded to the saami 48,000 usually around 40,000 and the 223 is 55,000 you can get more out of it than you'd think. Mike Bellm's site has some great info but in a 24 inch rifle something like 2700 for the 140 FTX and if I remember right 2300 for a 180 and around 2100 or better for a 200 and only lose 200 fps in a 14 inch barrel.