Steve, I don't know what the requirements are for action pistol power factor, but I've been running a 135gr Nosler behind 12.0gr of Hodgdon's Longshot. Book says 1480 from a 4" barrel, should be more from the G35. BTW, this load was taken from Hodgdon's annual reloading manual. I've stopped shooting them for now since I haven't picked up an aftermarket barrel for mine yet. If you were gonna choose between Jarvis and KKM, which would you choose? I've been leaning towards a Jarvis due to the black finish. Does one seem to be more accurate than the other to you?