new2bp
40 Cal
- Joined
- Aug 18, 2021
- Messages
- 325
- Reaction score
- 488
I know on anmentionable I can drive soft lead thru to slug the bore and measure it. Easy when the barrel is open on both ends
But what about on a percussion? If one were to remove the breech plug is it a straight bore diameter shot thru?
But what about on a percussion? If one were to remove the breech plug is it a straight bore diameter shot thru?