I have an old Knight MK-85 that has a pretty small flash hole. A 1/8" bit will not fit to clean it. Would I do more harm than good to drill it to 1/8"? I don't get misfires with BH209, but I want to be able to keep the hole clean.
When drilling the breach plug flash hole, any special tips? I would be concerned about breaking off that small bit when using my drill press.
Start with a smaller bit and work your way up to the 1/8th bit. Its probably years of carbon build up thats stopping the bit from going through the FLASH CHANNEL. Your FLASH HOLE is probably around .034-.035ish. You are using a bare primer Knight plug, right?
