Chamber depth gauge dimensions, 12 & 16 ga
- Thread starter orpington
- Start date
- Status
shooter1niner
Member
You could use fired shells for gages. I put a piece of wood dowel in the shell to hold the crimp fully open. Worked for me.
Try this site: www.saami.org
Try this site: www.saami.org
Last edited:
Kp321
Member
I am away from my shop till later in the week. When I get there I'll post the dimensions of the 12 & 16 ga chamber gauges.
Kp321
Member
Sorry to be slow with my response. The 12 ga chamber gauge is .800" OD and has marks at 2 3/4 and 3". The 16 ga chamber gauge is .732" OD with marks at 2 9/16 and 2 3/4". In the picture, the 16 ga I bought from Brownells and made the 12 ga myself.
Also, would the area that is full, about 2 1/2" inside the barrel, about 1/4" long, be indicative of previous chamber lenthening without even having to worry about using a gauge to determine chamber depth? This shotgun is a Fox Sterlingworth 12 ga dating from October of 1917.
Attachments
BBBBill
Member
2-3/4" and 3" are modern standards. Many older guns were chambered for shorter shells. Remember that you have to have room for the crimp to open up all the way BEFORE the forcing cone. Also older forcing cones were cut shorter/steeper for the old style wads. Much to consider when working with an old shotgun. Easy to make a royal mess of it if you don't do your homework first.
- Status
