I`m sure you considered Ziess? I did a turret for $65 on a 3x9 Conquest. Excellent scope, very dependable movement, and return to zero. Nice trim, bright glass, at $400. My third.
I developed my own drop chart, which you will have to do too...tho you shouldn`t have much problem out to 500+ yrs.
Zeroed at 300, your bullet is going to drop about 26-27 inches at 5. That`s a 5-6 MOA come-up...if my math is correct.