I am planning on buying one of these config.
http://model1sales.com/item-detail.c...u16carpre3.gif They call it a .300 Fireball does that mean it is a different chamber than a .300-221 or .300 Whisper or are these the same, would a .221F opened up work better than cut down, pushed down shoulder and necked up .223/5.56 brass work better in this chamber. I did call them but forgot to ask that Q. They did say however that there would be a 12 week wait time. That the muzzles are now threaded 5/8x24 tpi and the carbine position is opened up to 0.125" and also that 9.8gr H110 w/ 220 gr sierra MK go at 1150fps and cycle the action, also a 1:8 twist. One more Q. I read some old threads here, is it true that CMMG and DelTon at one point had .300 Whisper configurations for sale? Anyone trying a piston driven 300 whisper?
Threaded Mode