I loaded my bone collector about Thanksgiving..hunted for about 10 weeks in all kinds of weather from -8 degrees to the mid 40's and from driving rainstorms to two feet of snow, and you all know the amount of snow we had in north east this winter..during a break in late January I decided to fire it and then clean it..it went boom, right on target at 100 yards and the breech plug came right out with no problem and the barrel did need a little attention but all in all it was fine and that was with 3 pellets of 777..no problems that I can tell..