This post on rimfire central goes into good detail about the brno 2's
http://www.rimfirecentral.com/forums/sh ... p?t=212830
Think it says in there somewhere about these models were mainly built for arab/middle eastern area's and thus the action has abit more room in it for sand etc I know my mod 2's bolt flops around and has the clunk clunk thats associated with them, but damn it still shoots nice.
Are the newer cz 452 actions smoother than a mod 2???