I bought an impact for my dad for Christmas a few years back. He has had nothing but issues. I want to get things figured out for him. After doing some research and taking it to a gunsmith we found the barrel riffeling wasn't finished. T/c warrantied everything and we were very happy, and looked forward to this year. Shot twice before season everything seemed good. Didn't see any shooters this year and went to unload gun today and there was no power behind the shot just made slight noise and the bullet never hit the target at less then 50 yards. Gun was stored in gargae to keep temp consistent. In a 10 day season in upper Michigan would the bullet loose seating or pick up thatuch moisture?