Originally Posted by
roysha
Nope. It is the 223 REM case drastically shortened.
Indeed, it is a FUN gun to shoot. Factory ammo, while not exactly cheap, is quite reasonable and considering the need to buy brass anyway and the lack of available die sets it makes sense to use factory. Of course the brass could be formed from 223 brass but, as I said, at this point no dies. I have committed to purchase an NOE 225107 37 grain mold via the current group. The profile appears to be ideal for this cartridge and I would expect that with a GC I should be able to approach 1800 fps with little or no leading. I guess I'll find out.