Just been playing with Strelok + using the following settings for a .30 calibre jsb .30 44.75 grain pellet with a BS of .0427, and with a hawk 4x16 scope 2.25 inches above the bore and shooting at about 11.5fp. The table below gives distance to target at 2 yard intervals, Bullet speed in fps, energy in fp, inches hold over or under, MOA and Mrad readings. out to 36 yards it appears to retain more or less the same energy at same distances but the speed is about half that of a .177 jsb 10.4 grain, and the drop is 9 inches for the .30 and .5 for a .177.at 36 yards