Hello, I have started reloading my father 7mm RM, it's a Winchester m70 Class with a Boss system. I believe it's a 26" barrel.
150 combined Tech 150 ballistic silvertips, fed 215 primer, Nosler virgin brass, COAL 3.240
This is my work up
69.4 @ 2789fps
70.6 @ 2897
72.2 @ 2982
73.6 @ 3149
I was hovering at 1.25 to just under 1moa at 100 with them all. So I was over all happy with my first ever reloading, I do not think I saw any pressure signs, I thought maybe the primers were a lil flattened but they look identical from the lowest charge to the highest
I have now loaded exactly 73.7 of the RL25 and a COAL of 3.388 and plan on hunting with it
my Loads seem high but I used the Sierra load data....and started a a mild load and worked up....
we have always had great luck with the factory 140 ballistic silvertips but couldn't find any for reloading but could the 150s and they look promising.
we hunt big body white tails here in NE LA