by Tom Gaylord
Writing as B.B. Pelletier
This report covers:
- Use a bigger target
- Don’t look through the sight when adjusting it!
- Don’t go too far!
- Don’t adjust on the basis of a single shot
- Don’t change the reticle!
- What have you learned?
- Big bore match at the 2015 Texas airgun show
- Coming tomorrow: Log-in to make a blog comment
I was at the range last week with my brother-in-law, Bob, who was visiting us for the Fourth of July. He brought his Colt AR-15 to get my help sighting-in, which I was glad to do. He has had a lot of problems sighting-in this rifle with optical sights, and I wanted to see what they were firsthand. Boy — am I glad I did! I think some of you will be, too, because this experience made today’s report.
Bob had already gone through several scopes on this rifle — never being satisfied with any of the results he got. This time, he had a dot sight mounted on the gun, and the mounts allowed him to also see the rifle’s standard peep sights. An AR-15 is hard to boresight (align the bore of the rifle with an optical sight) because you can’t see down the barrel. With a bolt rifle you can simply remove the bolt and look down the barrel while aligning the scope’s reticle. When the bullseye appears to be centered in the barrel at the same time the crosshairs are centered inside the bull, you’re boresighted. A shot at this point should strike pretty close to the bullseye.