I reload, am way too lazy to set up for more than one recipe at a time. My pet load pushes 1 1/8 ounces at about 1275 FPS, cycles my autos just fine, and doesn't beat me up when I use it in my stackbarrels. I have, however, considered a 1-oz just for my stackbarrels, as long as I get that same 1275 fps. I think less recoil might equate to longer service life.
As an aside, I recently shot in a muzzleloading shotgun event and used my old, tried and true load of 85 grains of FFg/1 1/8 oz load, and was missing birds that that I knew I should have crushed. For no good reason at all I changed the load to 1 ounce, and started smacking birds again. Apples and oranges, I know, and all the variables associated with BP arms make the subject even more convoluted, but sometimes a change is just what the doctor ordered.