I do not know. I usually use them in one specific gun but shot them in my TOZ coach gun just to blow them off. The problem I noticed was that my cards and filler wads did not seat with much resistance and I,m thinking that the hulls are getting a bit tired and not springing back as expected so not getting the tight seal I'm used to. I have got a lot of reloads on them and never annealed them so I think I'll go for a partial anneal and see if they get some spring back into the hulls. Brass hulls, black powder and card/fiber wad stack just seem kind of right.
