Well, was never able to get the mag to positioned the bullet correctly for a reliable feed, even with that large mag ramp mag was loose, bolt open pin on mag got stock on body when inserting it, extractor could not pull out spend casings, week strikes, the firing pin hole was positioned incorrectly and strikes were almost outside of bullet rim, size of the striking part of the pin was to small... so continuous FTF, FTE and FTFire. I could find some more issues but i sold a while ago for half the price and tried very hard to forget that bad experience almost as hard i tried to make it run decently.
But they may have corrected those issues..
And heres the review i wrote on Rimfire Central:
Sorry but no!!. I bought one last year and it was a disaster. FTF,FTE,FTFeed. Not able to fire more than two rounds in a row. Firing pin to small and not correctly positioned, weak extractor spring and the mag was horrible in positioning correctly the round, last round bolt open pin on mag gets stock on body when mag is inserted. And it goes on and on. For around 500$ can, it was a real waste. Mine was in LR. I hope for 611 owners that the WMR PKP rifles are better than the LR ones. So after all that, i decided to go with a real BRNO. Love my 581