The "old" JOC load was 58.5 H4831 with the 150 gr bullet. He was using the WW II stuff and the old Partition with the relief groove. He said it gave 2950 from the 22" barrel of a M70 FW.
I've seen that velocity from M70's, Ruger M77's,Douglas barrels, and some others.
Drop the charge a grain or so and you can end up a bit above or below 2900 fps.
The differences, on game or over the chronograph, can vary rifle to rifle,and are not enough to write home about, on the chronograph or on animals.
Been awhile since I loaded any 150's in the 270....I just shoot 130's,and vary construction to suit.
Last edited by BobinNH; 06/09/15.
