So the bear (jeff walters) redid my c93 with a cold forged barrel from hkparts and a new truinnion and have shot about 1.4k rounds through it so far. I am stopping with my trigger popping for now as I got that out of my system and now want to take time with my shots. This being my first roller lock it really made me think of the issue with the gap always at a constant battle essentially to keep it in spec even if it takes years it will happen eventually from what I am reading. The question I have is how long will one of these barrels last and shoot well before the barrel itself will need to be changed? Im not talking about the rollers it seems that will add alot of time on it but someday the barrel itself will have to be changed correct? My bolt gap is at .22 which is what jeff sent it out with when he replaced all the parts. (He explained its good to be a litttle high and said to much people freak about it being in spec and said its good this way so as you shoot it will be in a good range.) I shoot about 100 rounds each session once every 2 months with my c93 and clean out all the parts so there is no dirt on it, I dont use aggressive scrubbing just put a little kroil oil on a cotton rag and wipe it down takes along time but is worth it. The barrel I just add a little kroil oil to the patch and run it 1-4 times through the barrel. Every 500 rounds I use a brass brush 2-6 passes. The barrel is still brand new looking. Thats my rant for today and tryed to use the search feature but as far as a guesstimation of how many rounds the barrel itself will take on the rcm ones I found nothing. HAPPY SHOOTING ALSO WANTED TO MENTIONED JUST GOT A M1 GARAND WHOOOO RAAA!