Having read DGJ’s articles on Damascus pressure testing-
I was considering the capabilities of the standard 1 1/8 oz. / 2 1/2” proof English guns.
Sherman’s tests concluded negligible pressure increase from shooting 2 3/4” loads ( not high velocity/high pressure) in 2 1/2” chambered guns.
Would it be unnecessarily risky in shooting 2 3/4” loads in these guns. The guns I’m considering are relatively heavy ( 7 1/4- 7 1/2 #), ( FLUID STEEL/ London ~ 1930 era) with original proof measurements, and 30/ 1000s min wall thicknesses / 45/1000 @ 9” from breech.
Also, there be any reason why an English gun would have original 12 gauge 2 1/2” proof at .740 rather than .729? The gun has no indication of anything other than .740 proof marks.
Thanks in advance,
Best Regards,
JBP
Last edited by J.B.Patton; 11/08/21 02:43 PM.
