I have a TX200 MKIII Standard in .177 with an Athlon Optics 6-24x50 Argos BTR Scope in First Focal Plane. I shoot JSB Match Diabolo Exact .177 Cal, 8.4 Grains, Domed exclusively. It's a dream to shoot if you hold it right. I shoot HFT with it. The keys for me is to place the sticks at the bolt...