I'm thinking about getting a cheap-ish scope for the AR to use as a check on the various bullet trajectories from my gun. This wouldn't be a constant-use item, here's what I'm thinking:
Sight in the gun with the irons using the 50 yd zero
Mount the scope and zero it at 50 yds
Shoot various ammo types at various ranges to get an idea of the actual precision potential for certain rounds in my gun(s) as well as trajectories
Remove the scope and use my irons as usual with the added knowledge of how my chosen ammo type(s) actually perform
Occasionally re-mount and zero the scope to confirm what my gun likes with different lots or types of ammo
We all (should) know that the trajectory charts produced are only estimations based on a certain gun or oddball test platform. This would allow me to see how MY ammo works out of MY gun now and in the future. This seems like it would be good to know and hard to find out using just the irons.
Since it's just for testing, a high-dollar optic seems like it would be a waste.
Any suggestions/criticism/input?