I load for my 66-5 with 110s, 125s, and 158s and never worry about how hot they are. I go full house with H110 and W-296 as a steady diet and have probaly put at least a couple of thousand through that revolver, and don't know how many through my 66-2, a lot. Both of those revolvers are still nice and tight and I'm not seeing any wear problems with regard to the forcing cones. The pressure cut to the strap is pretty well defined, but by no means problematic. I simply love to shoot the full house stuff out of all my guns and have heard a bunch of critics telling me it will greatly shorten their life span. There is just something about feeling that magnum potential that satisfies my purpose for hand loading. I'm still waiting for a death in my collection after many years and rounds. As a matter of fact, I just finished loading a box of 110 XTPs with 23.0 grain of 296 a few minutes ago.