Thread: .17 Mach IV Barrel

Originally Posted by southernman

I had a Cz .221 for a while, bought it to convert to a 20 vartarg, sold as I bought a cooper single shot in 20 vartarg, you may need a .221 mag to get feeding correct on a CZ, I had troubles feeding a fireball round, with my .204 CZ,

Yes this was my first concern too and I found a few old posts on other forums that had mentioned problems feeding from a CZ 527 too.

So...I loaded 5 dummy rounds to test the .223 mag feeding into the 6x45 Rem barrel and was pleased with the result. See attached vid.
There seems to be .221 Fireball mags available from CZ USA too

https://youtu.be/Qfgst8Tw4Ms