I own a 1991 vintage Win. M70 in 7mm Rem. Mag. To reach book velocity with 175 grain bullets I have to load something like 4.5 grains over book maximum. Have been shooting the load in question over the years and case life is good. Can't explain the anomaly but my feeling was that I didn't buy a 7mm Rem Mag in order to get 7x57 velocities. It is kind of a moot point now since I haven't hunted with the rifle in years.

Jim