Jeffrey says...

The Sightmark 308 Win, 243 Win, 7mm is an extremely easy and accurate method that I have used to sight in a variety of rifles. All you have to do is load the Sightmark into the chamber as you would a regular bullet and an LED visible laser will show you specifically where the rifle is aiming. There is no need to ever fire a shot, and I can accurately sight any scope. Every hunter using this caliber should have one.

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