I shoot 'em with my T\C .223 rifle set up, or my T\C .243 rifle set up....but the most satisfying is when I nail 'em with my T\C 14" 7-30 Waters (Scoped) set up. I got one a few weeks ago at 140 yards!!!
If you already have the Stoney Point Monopod, then I would recommend you get the addition that will make it a tri-pod. That's the set-up that I have and it's really a solid platform to shoot from. I would never had shot that one at 140 yards if I didn't have the 7-30 handgun set up sitting on the tri-pod. Stoney Point makes some excellent products. Since you already have half of it, you may want to just invest and get the other half.
MHO
Dave