hi mate you have one of the best springer,s on the market set your scopes at 28 yards then use the mildots for the rest of the distance ie,35, 40 excetra i never use my zoom on my scopes eather and practice and practice you will soon get the groopings you want the tx 200 is a heavy gun just get used to the weight as you will find after you have walked with it over a few feild,s it will weigh a tun hope this helps.mac