RockyMtnMT
Official LRH Sponsor
I run the 260g HH in my 338Lap imp 30" barrel at 3250 with Norma MRP. So I am thinking you might do best with powders in the 4831 burn range with the 260g. Rl26 is surprising sometimes since you can get so much in the case and it seems to find a way to burn before you run out of barrel.