My brother bought the optima pro last week and I helped him sight it in. He had the magnum, so we went with 3 pyrodex pellets. He purchased a pre packaged accessory pak from CVA also, it came with 20 powerbuilt hollow pt bullets in 296 grain I believe. We sighted it 3" high at 50 yds, which made it dead on at 100 yds, and 3" low at 150 yds. At 200 yds, it was about 8" low. Taz