I just finished re-building a muzzle loading .36 caplock rifle. It was a kit gun from several years ago. Must have been his first M/L project. Was an interesting challenge trying to correct the mistakes and finish it right. He probably had over $500 in parts and I bought it at a local pawn shop for $100. Was pleased with the results.
Now my question. On the drum, 90 degrees from the nipple there is a 1/16" hole that must be some kind of vent. I've never seen this before. Why was this done? I could thread it and plug it with something like a 3-48 screw. Should I leave it? Shot it today without any problems and seems very accurate.