Have had two Mini 30's, both were reasonably accurate, both would fail to fire at least once every mag with surplus but I didn't really buy them for shooting surplus. Had one CZ858, worked flawless and accuracy was on par with most bolt guns, had to part with a few guns to raise house building funds but another CZ will be in the locker soon, I do like them both and sounds like a spring kit is the fix for the Ruger. I wouldn't hesitate to own either rifle again. If you want a scoped rifle the Ruger seems neater.