The new Optilock scope mounts offer design that perfectly compliments Sako manufactured rifles. The Optilock scope mounts have new features making this famed scope mounting system the choice for ultimate accuracy. The ring insert is made of polymer and protects the scope tube from deforming.
The 8×57 JS and the rimmed version 8×57 JRS are both very flexible cartridge that duplicate the performance of the .30-06 and similar cartridges. Today not many bolt action rifles are made in 8×57 JS, but a good many double rifles and combination guns are still being chambered in 8x57JRS. However as the latter type of guns has a weaker action the loads should be reduced in order not to exceed the pressure limits.
Caliber
8 x 57 IRS (JRS)
Weight
8g/123gr
Ballistic coefficient
G1 0.191
