Gauge question

[Austin W Hogan]

Gauge is determined by chamber diameter in the US. A 12 ga chamber is nominally .810 diameter but might wear to a little larger diameter. Modern plastic cases have some taper near the mouth for easier feeding and may feel loose.

Best, Austin

[D. Shane Burton]

Originally Posted by Austin W Hogan

Gauge is determined by chamber diameter in the US. A 12 ga chamber is nominally .810 diameter but might wear to a little larger diameter. Modern plastic cases have some taper near the mouth for easier feeding and may feel loose.

Best, Austin

Okay, it's a 12 gauge. I didn't close the gun when I put the live 12 gauge shell in because it has an issue with the action. It was the taper of the plastic, as I got a fired shell and the brass fits in the chamber perfectly. My dad measured the chamber size at 0.812 on each barrel. The depth to the powder ring within the chamber was right at 2 1/2 inches.

I'm going to put two separate threads up with details and pictures soon; one for the 16 ga and one for the 12 ga.

Larry, since you asked here, the 16 ga SN is 105322 and the 12 ga is 93289.

I'm off to start the other threads...

Thanks,
Shane