MagnumManiac
Well-Known Member
I am not exactly sure, but I feel I get away with using H50BMG, US 869 and RL33 in those cartridges because I have custom chambers (264WM) and custom long throats. Use the same long throats in other cartridges to get more oomph, appears to work very well.I've thought about the very slow powders (h50, 50bmg, rl50 & 2 vv powders), but so far for the 264wm I have rl33, 570, lrt to try. I do have 1 full # of 7977. I bought the 7977 for nosler 142ablr in 264wm.
H50BMG is excellent when compressed, very accurate charges are easy to find.
Cheers.