Kent 12ga TM 2 1/2-inch 1 1/16oz is 7500psi, and 1oz is 6,500. Use them all the time in my old guns.

A few years ago, an excellent shot rolled his eyes when I asked him to try the 1 1/16 load above. Made a convert on his next shot: an afterburner black at 50 yards.

The good old guns will handle 12ga Kent TM 2 3/4-inch 1 1/4oz at 9500 although I use the former because that's all that needed for killing birds.