I use the true Keith bullet, #429424, almost exclusively, along with about 9.5 grains of Unique in my 4" 29-2 and a 6 1/2" 44 Magnum. That's not so much to preserve the guns, though it has that benefit, as it is because that's what I enjoy shooting and because that's just about always enough power (and then some). I do lots of shooting in the wild, have taken mule deer, coyotes, badgers, antelope, jack rabbits, fox, etc., etc., with that load, and it has always worked just fine. If I'm in griz country (we do have griz around here, unlike most areas of the country) and if I'm carrying only a handgun, I use the ol' standard load of 22.0 of 2400 with the same bullet. Nothing against the guys who like more power all the time - I used to myself - but as I've gotten older I've realized I usually don't need more than what I've noted above so why beat myself up?