Just got a Buckmark UDX and after cleaning/lubing, took it to the range. Sometimes I get through an entire mag w/out a FTF (failure to fire) and sometimes I don't. I can't tie it to any particular magazine, and while it happens more frequently w/Remington bulk ammo, it's also happened w/Winchester and Federal. So, far I have around 700 rounds through it. The cleared round will have just a real light firing pin hit on the rim. If I rechamber the round, it'll fire, but this lack of reliability is going to be a problem in Steel Challenge. Anybody come across this before and what did you do to fix it? It's a tack driver and feels great in my hand, so it's a keeper, just gotta get through this rough spot.