Heh I have a cva hunterbolt. I know that even with a 150 grains pyrodex it only produce a chamber pressure of about 16,000 psi but any muzzle loader can withstand even higher pressures. A friend of mine told me about a test that was done on BPI muzzle loaders that they have tested them all the way up to pressures of twice of what a 150 grains of pyrodex produces that would be in the range of 32,000 psi. I beleive that too, since the same friend conducted his own test with a CVA staghorn he double charged it with 4 pyrodex pellets 200 grains of pyrodex he rigged the trigger so he could stand behind a wall when it was fired, it fired fine no signs of excessive pressure or stressing he loaded it again this time with 5 pyrodex pellets 250 grains of powder this time the it breeched but only cracking the barrel from the reciever up to about the last 8 inches of the barrel. in this case I know BPI makes a good rifle I would put my money on the idea that Muzz30 did something funny. I hope you know that with trip 7 if you use a traditional powder measure you are supposed to cut the charge back by 20 percent since it only takes about 80% in volume of trip 7 tp perform the same as pyrodex so basically if you measure 150 of trip seven in a blackpowder measure you should actually only measure out 120 grains to perform the same as pyrodex so in all actuallity your 110 grains of trip 7 could have really been 140 grains. I'm really hoping it was your error and not the quality of BPI gun that caused your incident. I'm sorry if that sounds heartless but its the truth I'm sure cayugad feels the same way. either way keep us posted on what turns out on your ordeal I would like to know if i should get rid of CVA or not.