We use low pressure loads not for the barrel and action concerns but more for the stock. Every gun passed proof but no guns stock was subject to proof. Wood dries with age and gets weaker due to stress. You crack a stock due to heavy recoiling loads it might be the end of the line for your gun. So we go for 1 ounce, 1100 fps 12 loads because that’s what it was meant to shoot. We find pressures in the 5-6,000 psi to keep stress on the barrels low. I shoot barrels as thin or slightly thinner than .020 without worry. It’s all about location and shell selection.
