So My new mount came in (american defense recon S) and it verified my suspicion that after I lapped the rough spot out of my Primary Arms scope mount it should have been 0 MOA and make it easy for my scope to sight in. But nope. Still about 26MOA off in elevation if my math is right...(bullet would hit dirt well below the target if the scope elevation was at center of its adjustment range @ say 50yds)
So I have a 4-14x44 ACSS DMR 308 scope from Primary Arms for my DPMS gen 1 Low pattern .308 rifle.
The scope has 17.4mil adjustment range. (Roughly 60MOA total elevation adjustment)
put a bore sight in it and saw it is off by a LOT...like laser is at bottom of the scope with adjustment range in the center. So adjust till the laser is where it should be in the scope.. I verified where it should be via my 7.62x39 which is sighted in and dead nuts on, and the laser should be slightly low and to the left of center of reticle for dead zero according to the 7.62's scope with the bore sight in that rifle...
So adjusting this thing I am about 1 mil (turrets are in mils. 1/10th mil per click) from being out of adjustment range just to get on paper. My thinking is I will probably need a 20MOA mount to get most of my normal adjustment range back since I should have +/- 30MOA up and down and I only have about 3-4MOA left of adjustment and I'm not even zeroed yet...this is just to get close enough to get on paper. Leads me to believe either the scope is -20MOA or the upper receiver's pic rail is -20 MOA. But my thinking is a 20MOA mount should get me back in the close enough to center range to allow me to sight in at 100 and have some adjustment range back.
Anyone else have thoughts on this?
This is the mount I had in mind:
American Defense Manufacturing AD-RECON-S 20 MOA Scope Mount Up to $11.04 Off w/ Free S&H — 3 models
Y'all think it will fix the issue I'm having?
rifle in question:
BTW it has the 0 MOA american defense mount on it now (PA mount shown in picture above)
So I have a 4-14x44 ACSS DMR 308 scope from Primary Arms for my DPMS gen 1 Low pattern .308 rifle.
The scope has 17.4mil adjustment range. (Roughly 60MOA total elevation adjustment)
put a bore sight in it and saw it is off by a LOT...like laser is at bottom of the scope with adjustment range in the center. So adjust till the laser is where it should be in the scope.. I verified where it should be via my 7.62x39 which is sighted in and dead nuts on, and the laser should be slightly low and to the left of center of reticle for dead zero according to the 7.62's scope with the bore sight in that rifle...
So adjusting this thing I am about 1 mil (turrets are in mils. 1/10th mil per click) from being out of adjustment range just to get on paper. My thinking is I will probably need a 20MOA mount to get most of my normal adjustment range back since I should have +/- 30MOA up and down and I only have about 3-4MOA left of adjustment and I'm not even zeroed yet...this is just to get close enough to get on paper. Leads me to believe either the scope is -20MOA or the upper receiver's pic rail is -20 MOA. But my thinking is a 20MOA mount should get me back in the close enough to center range to allow me to sight in at 100 and have some adjustment range back.
Anyone else have thoughts on this?
This is the mount I had in mind:
American Defense Manufacturing AD-RECON-S 20 MOA Scope Mount Up to $11.04 Off w/ Free S&H — 3 models
Y'all think it will fix the issue I'm having?
rifle in question:
BTW it has the 0 MOA american defense mount on it now (PA mount shown in picture above)