What am I missing... could you clarify the difference. It is my understanding that the location of extractor was slightly different for rifles chambered in 221 Fireball to facilitate extraction of the shorter case or at least in the Rem 700 Light Varmint (early 2000's). Both the .222 and 300 blackout bolt setup is the same as .223.
Thanks
Gunslinger is starting with a 22-250 action. You'll need a different bolt, block the mag box,relocate the ejector, said something about installing Sako extractor. I'm not sure if the feed rails are the same or start with a action already set up for .221.
Hal