Originally Posted by alaska
I am trying to duplicate the Winchester factory load in the 7mm WSM with 160gr Fail Safe.
I need the COL length and the powder charge in the 7mm WSM fail Safe load?
Thanks for any help
Jeff in Alaska
It won't do you any good because the powder charge is propitiatory and appears to be
I pulled the bullet on one, and had to dig the powder out with an awl and after I did I
weighed it and found no load data that could use that much powder even with a few
grains less (Because the loading books are conservative).
so I just started using the best powder for velocity and found that the factory velocity was
not possible unless you want to load over max pressures.
I found that H4831 sc works well and a few other powders as well and the accuracy improved
even though the velocity was almost 40 ft/sec slower.
J E CUSTOM