AA2700 will rule the day with 50g bullets, around 44.5g. Try a fed 210 and a Rem 9 1/2, major diff in most guns. Expect 4000 fps, and groups opening up a single bullet hole.
IMR 4064 is great but eats barrels.
AA2700 is just a tad faster than Win 760, and H414 is not the same as 760, just a tad slower.
