If you have a CZ WMR and it's not shooting well enough to suit you, don't give up on it until you try some Hornady 30 grain V-Max ammo. I'd seen a number of CZ owners saying that this ammo shot noticeably better in their CZs than other makes/models of 22 Magnum ammo. My 452 Lux was about a 1.6 MOA shooter with a few different types of CCI and Winchester ammo. I wasn't very happy with that so I tried some of the Hornady 30 grain and love it because the gun with this ammo is consistently under 1 MOA well beyond 100 yards. With the improved accuracy the gun went from being just okay in my view to being one of my favorite rifles. 22 WMR is a very sweet round.