Good old H-570 in the 264 is tops and has been for many moons for launching 140's. The case is almost it's own powder measure fill er up hear the crunch when you seat and go shoot! Too bad you younger fellars haven't been able to try it!!Also good in the 7 and 300 mags with heavy pills..My old standby has been 140gr Partitions 73.5 grs for a consistent 3175-3190 out of a 26"pipe which translates to a gnat's azz over 1 MOA..Plenty good enough for knocking a speed goat on it's behind about as far as you can see!!
..really.
