770 fps with a 16 grain pellet ? from a .22 benjamin prowler , rt ? ive have 2-3 of these - and it's a good $100 gun. here at 750 ft above sea level , mine generally shot around 725 fps with 14 grainers (crosman premiers) very consistently , and was pretty accurate - 5 shots groups inside a quarter, and usually better. but it was a joy to shoot , easy to cock , ergonomic , easy recoil..... wasnt much to do as far as tuning it - did the bearing trigger trick and sanded the trigger guard because the plastic molding had a burr that scratched into my hand, and i honed the air chamber. to me, it was basically a titan with a very solid plastic stock. and to the guy who displayed his group on the paper plate : those groups will get tighter after you do a few things to it (oh yeah, i discarded those plasic barrel shims and used hardened bronze washer/bearings which tightened any side play in the barrel block lock up area) .... and if your prowler is brand new , those barrels usually get better after they get leaded up and seasoned after 200-300 shots or more...