Any of you guys own the CZ 455 with the 3 barrels?
I had one for about 6 months now, during which I've swapped the barrels once, 22lr -> 22mg -> 17hmr -> 22lr and not changed it back until last sat. I didn't hunt with it, just plinking and trying out the new barrels. Last sat I put on the 22mag barrel and was trying to zero it. For some reason, it will not group smaller than 3 inches at 68m. I was using cci 22mag maxi mag. After trying for about 40 shots, I decided it was good enough and when wallaby shooting (chest shots at about 25m).
When I got home, I took it apart for cleaning and found that the barrel was quite dirty as compared to my howa 223. Both rifles shot approximately the same number of rounds the whole trip but it looks to me the 223 hardly needs any cleaning at all.
I'm confused.
When you change the barrel on your cz, how much do you tighten the screws? I go finger tight on the short end, then finger tight on the long end, then another 1/8 of a turn.
On a totally different subject, what ammo actually penetrates, expands and dissipates all its energy into the target? I'm asking that because, the 22lr and mag seems to be punching holes straight through the animal, based on the dirt "cloud" behind.