I'm Trying to work a load for a 10" 30 Harrett. I've tried 4227 and 125 gr Sierras without much accuracy. Any ideas?
Thanks.

My best load is 26gr RL-7 and a 130gr Hornady SP. This is in RP brass and lit with CCI200 primers. Makes just over 2000fps and is SUPER accurate!

Here is my standard load. I settled on it after extensive testing. I'll be using it for antelope in WY next month. 10" bbl. The fps is in another book that I don't have with me right now. I have the IMHSA data if you want it. I'll be gone till Monday.

21.5 296 WW 125 gr. Nosler BT, CCI 200 primer, Case Length: 1.600, OAL: 2.440

Bill in OR

I found my drop tables:
21.5 296 WW 125 gr. Nosler BT, CCI 200 primer, Case Length: 1.600, OAL: 2.440

Consistent 1.00” groups @ 100 yds. and 4” @ 200 Yds

POI = 1.00” low @ 50 yds
POI = POA @ 100 yds
POI =1.5” high @ 150 yds
POI = 9.00” Low @ 200 yds

Bill in OR

Thanks Much.