The testing by Capt C. Askins and Sweeley, along with De Pont progressive powder and help
from John Olin at Western Cartridge; eventually resulted in some powerful Super-X shells.
The research eventually culminated in 3 in magnum shells and the AH Fox HE Grade Super Fox along
with the LC Smith Long Range shotguns.

The wall thickness and pressure-related incidents are sobering. Particularly as relating to our 100-yr old
fine American fluid steel barreled shotguns. Has anyone or any company done steel metal fatigue testing in older shotguns?
Thanks for the research, DH.

Last edited by 1916XE; 07/17/22 10:57 AM.