Bought a renegade second hand last fall. Darn good shape and a good shooter. After a 100 rounds or so and several cleanings, symtems of shot out nipple appeared. No problem, change the nipple right? That's when I discoverd the nipple was actually an "oversize". The breechplug had been taped to .15 over! 1/4x28 wouldn't fit.
So I bought an oversize nipple to fit the hole. Lo an behold, that nipple went too deep! It seated so deeply in the breech the fire from the cap couldn't reach the main charge! (aftermarket)
Long story short, I sent the barrel to T/C along with this very same explanation. I sent it 1/10/09,,I got it back today 2/24/09. New Breech Plug/nipple/and they re-blued the barrel!
Man! When they say "lifetime warrenty" they mean it!
It's really too bad the blued it,,cause I'm gonna strip it and rust brown,,