We were discussing my OlyArms AR-15 irons and why I was having trouble zeroing. He asked, "Do I have military sights or competition(?) sights?" I stumbled in answering because this now MilSpec carbine was properly configured... except for one thing: in reading the mil zeroing article on ar15.com I didn't have that 8/3 start-point, my detachable handle rear sight has one-click steps from 0 through 15. (He also talked in "Inches").
To digress a bit for info, I have a 4x scope on the handle and alternate with a red dot on the flat top. Most of my range effort was in zeroing the two scopes at 25 yds. Finally getting to the irons later, they were almost right on - a bit low with the dial set at zero. I wanted to adjust the front sight but the range was crowded and handling was awkward. I could live with an inch or so low until next time.
When next time came I set up on the 50 yd to see where the hits were with the two scopes. Not bad but needed teaking, but I had more interest in the irons at that point. Well, working with a spotting scope I ran about 8 rounds firing and looking each time. Never saw a hole in the paper. That threw me as to how that could happen. The handle was mounted right and tight, the settings hadn't changed since last outing.
My rear sight does not have that really large 0-2 aperture (that the 'smith showed me on another AR with the 8/3 setting) - mine is smaller and of course the other aperture is even smaller.
My questions: What is the appropriate zero method for my 0 - 15 irons? And what did he mean (if I understood properly) by "a thousand inches"?
TIA.
-Andy
To digress a bit for info, I have a 4x scope on the handle and alternate with a red dot on the flat top. Most of my range effort was in zeroing the two scopes at 25 yds. Finally getting to the irons later, they were almost right on - a bit low with the dial set at zero. I wanted to adjust the front sight but the range was crowded and handling was awkward. I could live with an inch or so low until next time.
When next time came I set up on the 50 yd to see where the hits were with the two scopes. Not bad but needed teaking, but I had more interest in the irons at that point. Well, working with a spotting scope I ran about 8 rounds firing and looking each time. Never saw a hole in the paper. That threw me as to how that could happen. The handle was mounted right and tight, the settings hadn't changed since last outing.
My rear sight does not have that really large 0-2 aperture (that the 'smith showed me on another AR with the 8/3 setting) - mine is smaller and of course the other aperture is even smaller.
My questions: What is the appropriate zero method for my 0 - 15 irons? And what did he mean (if I understood properly) by "a thousand inches"?
TIA.
-Andy
