Well,..I used 49.5gr of IMR 4320 as planned. No problems and no signs of high pressure. Avg velocity of 150gr. .311 TSX in the 7.62x54R was 2800 fps.
That puts me right at .308 Win performance levels with my Mosin-Nagant
That puts me right at .308 Win performance levels with my Mosin-Nagant