I took my new 522 out today, just got it yesterday. I put a Burris Fastfire on the rail. After sighting it in I shot some groups with the five kinds of ammo i had on hand. These were shot at 25 yards with a bipod. These were 10 shot groups. Bitterroot Valley Ammo Co. 36gr hp 1 1/4" Remington Eley Match Rifle 40gr lrn 7/8" Remington Eley Target Rifle 40gr lrn 1" Remington Thunderbolt 40gr lrn 1 5/8" CCI Minimag 36gr 1 1/8"