Hello fellas decided to put a scope on my CMMG AR so I can see how accurate it will be at 200yds and 300yds(my eyes can't see with iron sights that far)Its a nikon 4x9x40 with bdc..
Nice setup. Is there adequate eye relief? With my Leupold VX-III 3.5-10X40 1" tube, I needed a forward cantilevered LaRue Tactical LT-104 scope mount (for 1" tube). For this scope I needed the eye piece further forward than yours for adequate eye relief. The ARMS 40-L low profile BUIS clears the eye piece with only 2mm to spare.
What kind of trigger do you have, as it can limit accuracy. I have a Rock River Arms two stage NM trigger group.
Performing a rough sighting in with my laser bore sighter, there was a lot of parallax at 20 yards. I read the manual and my scope is designed to be parallax free at 150 yds, so all is good.