does every gun very in speed a little cause I see aoa doing a review and they had a 880 average I think . Or are chronographs diffent I had it about 6 inches away from that barrel . .? Pellets were jsb 44.75 240 bar fill . 865-865-867-861-860-856-853-861-858-857-859-862-857-856-861-859-859-854-859-860-861-855-854-858-860-852-851-859-858-856-862-855-863-867-866-865-864-868. That's 40 shots with a min of 851 and max of 868. Spread of 17 stdev of 4.5 . Thanks for your input .