I have an old Savage 110 Sierra light in 7mm Rem Mag. 7.25lb w/ mounts, rings and scope. Great rifle w/ suprisingly light recoil. You should look at used guns. I know of a Savage 7mmRM That is new W/ iron sights, 15 years old new, that has a tag of $275.00. It needs a front blade as it never had one. $15.00 at midway.
The 7mm SAUM currently retains a small following. This cartridge, chambered in the model 7 rifle, is appreciated for its ability to produce high power from a small, ultra-light weight platform. Performance The 7mm SAUM does not achieve 7mm Remington Magnum velocities or performance. This cartridge duplicates the velocities of the .280 Remington.