The Firing Line Forums - View Single Post - it blows me away... how did they do it ???

Jim March · August 24, 2011, 03:10 PM

I wonder if any of the smaller shops were either line-boring or at least line-marking?

Figuring out where to put the bolt stop notches is at least solvable. So then you put the blank cylinder in the gun (or just the frame?) with the bolt notches and ratchet cut, and you mark where the cylinder bore holes need to be by coming in from the front with a punch that is run either in through the barrel (open tops?) or through the hole in the frame where the barrel will go later (closed tops).

This gives you a really nice matchup between your gun's particular frame and the cylinder. Freedom Arms does it this way...they actually do the initial cylinder drilling in from the front through the frame.

August 24, 2011, 03:10 PM	#11
Jim March Senior Member Join Date: February 14, 1999 Location: Pittsburg, CA, USA Posts: 7,417	I wonder if any of the smaller shops were either line-boring or at least line-marking? Figuring out where to put the bolt stop notches is at least solvable. So then you put the blank cylinder in the gun (or just the frame?) with the bolt notches and ratchet cut, and you mark where the cylinder bore holes need to be by coming in from the front with a punch that is run either in through the barrel (open tops?) or through the hole in the frame where the barrel will go later (closed tops). This gives you a really nice matchup between your gun's particular frame and the cylinder. Freedom Arms does it this way...they actually do the initial cylinder drilling in from the front through the frame. __________________ Jim March