ORIGINAL: Pittsburghunter
No POA seams to stay about the same. I switch between three barrels and have had no problems original pin and all. I live in NH though so T/C sells us all the best guns they make. You people have to deal with what you get.
I'll remember where you live should I ever need a really good quality Thompson Center... you can walk right down to the factory and pick it out for me...

Any .58 caliber flintlocks around there?
It is strange that one has problems and another does not. I would be calling Thompson Center tech support and finding out why. With what they pay for those rifles they sure better work like they claim.