+1; Agree that they all seem to have a preference, but not about staying away from the bulk ammo. My MK III shoots Remmy 'golden bullets' just fine, However..... it REALLY likes Federal 'Lightning' stuff, and just LOVES CCI "Green Tag" ammo. Naturally. The latter goes for around $75 a brick; . . . when you can even find it!96/44":yabwilh4 said:Rimfires tend too be very particular about ammo, with each gun having a different preference. I would stay away from most bulk packed bargain ammo, and CCI mini-mags generally work well in anything. Just buy a few 50 rd boxes of different ammo and see what shoots best in your gun, high velocity ammo will not be an issue.