Muzzleloader wont fire.

[Howard Pippin]

I have something coming .

I have three percussion rifles that I mainly shoot 777 in, though the first one I had 30 years ago, I was using pyrodex. My way of solving the problem without having to go to Magnum primers was boring out the nipple from the factory size of .028 to .031. I imagine that it takes something away from the number of shots I can get out of a nipple before the hole gets too big, but at my age that's kind of a moot question. So far in 30 years, I've never replaced a nipple because the hole was too big. I don't load those 70 and 80 grain loads for shooting paper, and that probably has something to do with the wearing out of nipples.
Squint

 

[Big Tom 52]

I had the same problems, listen to the members! I followed their advice and I'm shooting with no problems now. I have a T/C Cherokee and the flash channel has the bell shape like in the photo. I was using a flat scraper that wasn't doing the cleaning i thought it was and to be truthful I wasn't cleaning as good either.