NCVARMINT,
I own all three Calhoon calibers. The most accurate for me is the .19Calhoon (Hornet). The flattest shooter is the .19-223. But, I like the .19 Badger the best. The .19 Calhoon has a rim. Does not feed as smooth as the badger. the .19-223 can be a little loud in small areas. The badger has excellent accuracy, not too loud, and very accurate.
All three are easy to load. The .19 Calhoon and the .19-223 are easy to form the brass. According to James you should not try to form the brass for the Badger. His prices are very reasonable for brass, bullets, and loaded cartridges. I bought 500 rounds of brass for the Badger and 200 rounds of loaded ammo. I also bought 1000 bullets in each of the weights. Between the three rifles I am set for awhile.
The Mach IV is nice. But, the Badger is nicer. Calhoon uses .30 M1 brass to form the Badger. Probably could use .221 Fireball, but M1 brass is cheap and strong.
Guess you can tell I really like these rifles.
Jeff