How much does yer setup weigh? Once your sighted in at a decent range maybe drop an inch per yard with heavy weight arrow setups! Example you sight in fer 30 yds. then it would drop about 10 inches in that 10 yds. from 30 to 40. You really just have to try it out and see. My 500gr. 2219's dropped 2' when i sighted in at 25 yds. to the 40 yd. mark 2' in 15 yds. that was with a Phoenix shooting 265 fps with those logs!