I own the above scope. Mounted on a TC Impact. Leupold info really only refers to using 'pellets' for powder and adjusting the power ring on the scope to match the number of pellets. My rifle is super accurate with the BH 209 and it requires considerably less maintenance. My question is this: has anyone figured a way to reconcile the BH 209 powder vs the pellets? What about using different weight bullets? I think I figured it out with Barnes TEZ Spitfire 250 gr. but I'd like to try to set up the scope with the Barnes TEZ 290 gr. Shoots tighter groups. Any suggestions? I don't have access to a range beyond 200 yds, which is one of Leupold's suggestions.