In reading the posts it seems several of you have a great deal of knowledge., so I hope you can help me with my question. I have a 27" barrel that is .850 dia. at the muzzle and currently has a holland muzzle brake. At the present time it shoots .25 moa out to 300 yds (as long as I do my job)...
Have a Palma rig outfitted with a Warner #2 rear and a Gehmann #566 iris. How the heck do you keep the iris from unscrewing where it's threaded to the rear sight when you change the iris adjustments?
I wanted to adjust the aperture -- the range being 0.5 to 3.0 -- and when I turned it to the...