In over 10,000 rounds in 7 years I have a failer rate of zero now that is if you throw out the 3 dud's I have had. I used Wolf , Winchester , some Remington and about 6,000 of my own hand loads. Yes it could fail but I have put that little rifle through the test, dirt, going uncleaned, wet, and just plain shot alot at times never a hang up to go into battery. At our range there is a class 3 club and I have shot one or 2 of the rifles that show up and not many have hung up I'am not saying it doesn't happen but it happens in them all every now and then.