Originally Posted by
hunter235
OK, the fire channel at the primer end only had a .050 (approx.) opening. I started with a .060 drill and worked up to .125. Now I have a .125" opening to the fire channel. I removed a lot of carbon, but I think I was also removing some metal. But, definitely a much larger opening to the fire channel. I'll brush out the interior or the fire channel and use a nipple pick on the opening to the barrel, which is .030 or below. I'll try it again this coming weekend and see what happens.
Again, thanks to everyone.
Don't use a drill, just the drillbit. You just want to remove the carbon buildup, not metal. I use a pair of pliers to grip the drillbit and place the breechplug over the bit and turn it. Other people have glued the back of the drillbit (1/8") into a short piece of dowel rod) to serve as a handle