Ah, I see. OK, it likely would work if you can get the bullet into the bore and not let it go through the throat. Same thing that happens in a muzzle loader. Have to size them to bore dia. after they are lubed. Of course this all depends on the rules you are shooting under. Some matches require fixed ammunition, and others allow you to use a breech loading muzzle loader. As for patch wear, use 100% cotton paper without whitening agents and the bore should last a long time. But I do hear you, and if it is an original rifle then grease groove bullets will be easier on it. One big question is what does the throat look like? Usually rifles are cut for either GG or paper patch bullets and don't give their best accuracy with the one they're not made for. And quite often a PP chamber won't let the case expand enough to seat a groove diameter bullet into the case mouth. Have you done a chamber cast to know exactly what you are dealing with?