The Firing Line Forums - View Single Post

Wyosmith · March 20, 2013, 09:54 AM

Nenewt, 20MM is .787"
I gave up on my math skills and ability to convert, and just went to my shop and measured it.
So a 20mm is a slightly loose 10 gauge. The "standard" for a 10 bore is .780

March 20, 2013, 09:54 AM	#10
Wyosmith Senior Member Join Date: December 29, 2010 Location: Shoshoni Wyoming Posts: 2,713	Nenewt, 20MM is .787" I gave up on my math skills and ability to convert, and just went to my shop and measured it. So a 20mm is a slightly loose 10 gauge. The "standard" for a 10 bore is .780 Last edited by Wyosmith; March 20, 2013 at 10:01 AM.