The "Only" way to reduce total pressure is to reduce total ballistics, IE reduce the shot load, reduce the velocity OR Both.
It has often been stated that shooting a factory light 1 oz load (12ga) is just as hard on the gun as shooting a Hi-Vel 1 oz load because they both have the same allowable max pressure. This is only partially true. True they "MY" Reach the same Max pressure & point of max pressure may be no more than " apart, but it will be closer to the breech in the 1 oz load so the walls will be just a bit thicker. The pressures for the rest of the bbl will be a bit lower, the strain on the action, stock & shooter will be less with the 1oz.
