Hate to disagree but most of that PR bullet stuff is BS, back a few years ago i was shooting XTPs and 3 pyro or 3 777 pellets and getting good accuracy, but got tired of swabbing the bore every shot. So i was introduced to powerblobs(PR bullets term)and shot them for a few seasons, but wasn't satisfied with the accuracy and found PR on line who offered all sorts of solutions. Their first line of bs is that full powered 209 priners push the bullet off the powder before the powder is ignited. So they have a breech plug to sell you that takes a sawed off 22 hornet casingand the small rifle primer won't push the bullet off the powder, not a reloader? They have the variflame adapter kit, basically an empty 209 primer, that you push in and pick out small rifle primers. If this is so, why am I now getting clover leaf 100yd groups with full power primers in my Encore, Omega and lyman Mustang, getting great accuracy with BH209 and Barnes,T/C and Hornady sabots. The second line of BS is their sub base adapter, which is a plastic disc that goes under the base of the sabot to protect it, using this under any reasonable load I had trouble getting 6" groups at 100yds. Third line of BS is their sabot in a sabot, basically a 35cal bullet in a 45 cal sabot, inside a 50 cal sabot, good luck getting this to shoot! Fourth line of BS are their regular sabots, which actually shoots, but remember they're plain lead bullets with a polycarbonate tip. Fifth line of BS is that their bullets that are similiar to many other in profile etc. magically drop 3-4 inches less at 200yds. These are only products I have personal experience with. After all this I went back to 3 pellets and xtps in black sabots ang got good accuracy, thrn a week later they came out with easy glide shockwaves, which shoot great groups. Basically PR preys on people who are having accuracy problems and gives them bogus solutions, like i said my guns are shooting great now and i wasted a year at the range try PR bullets "solutions"