Lee C309-150-F 150 grain FPGC cast of wheelweights, lubed with Lee liquid Alox and sized .310 over 29 grains of IMR 3031. 1,924 fps average, 2.25 inch 5 shot groups at 100 yards and no leading in my 30AS.
I shot at Ridgeway PA in October and one of the rifles I used was a 336SC (20") in 30-30 at the 300 meter target. I was using the Lyman 172 grain FN bullet and 17.5 grains of SR4759. I am in the process of working with a bunch of cast bullets in the 30-30. I have molds for LEE 150 and 170 , Saeco 150 , RCBS 150 and Lyman 172 in plain and hollowpoint. Also I use Thompson's Blue Angel , for my lube :wink:
I have a 24" 336A I shoot at silhouettes and I use WW 748 powder with the 170 Speer FP despite the fact that I usually use cast bullets. My Marlin loves those Speers & WW 748. When I developed loads I had a scope mounted and this 30-30 would group 5 shots in an inch @ 100 meters, not just one time but consistently!
If you shoot at CSLC I'm sure we know each other and I'll see you in March.