RE: new bullets to try
Excellent shooting there Cayugad. Those home cast Lees are the way to go with any gun you can get them to shoot in. I have that mold also. Got it for my 45-70 and have only cast wheel weight bullets for plinking. Guess I'll have to pull out the pot and ladle and cast up some in pure lead to try in the .45 GM LRH barrel. If I can get groups like that I would be one happy camper.
I believe the heavier bullets shoot higher with the same chargebecause they generate just a little more recoil that kicks the barrel up a little more before the bullet leaves the bore.