In Muzzleloadingforum.com, they were discussing the barrels on these guns and CVA's I believe only being tested to like 10KPSI from Spain, I believe and possible dange to shooting 150gr pyrodex loads even though they say you can. I blew off the post, and figured a company like them would know better. Could be something, could be nothing. It would be cool if youcould post a picture. Did it just crack? Blow the chamber out?