I found with MY AR15 the scope needs to be above the centerline of the barrel about 1" more than my bolt rifles.
This does funny things to trajectory.
I shot at 100 yards and stuck the scope at zero. Then at 200 yards the load was 6+" high.
WHAT!!
I dialed it down to be just about 1/2" high at 200 and now it is only about 1/2 or 3/4" low at 100.
There could be some benefit to the high scope mount.
Left me scratching my head.
Tinbender75 how far are you planning on shooting..AND are you planning on taking deer size game at long range or just hitting steel at say 500 yards?
Makes a big difference on caliber choice.
I really do not think you need to drop much for steel plinking at 500 though.
So I am thinking you want 1000+ yard stuff.
This does funny things to trajectory.
I shot at 100 yards and stuck the scope at zero. Then at 200 yards the load was 6+" high.
WHAT!!
I dialed it down to be just about 1/2" high at 200 and now it is only about 1/2 or 3/4" low at 100.
There could be some benefit to the high scope mount.
Left me scratching my head.
Tinbender75 how far are you planning on shooting..AND are you planning on taking deer size game at long range or just hitting steel at say 500 yards?
Makes a big difference on caliber choice.
I really do not think you need to drop much for steel plinking at 500 though.
So I am thinking you want 1000+ yard stuff.