Things I liked:A consistent and heavy weight wad cutter that is idea for buffering any magnum spring piston powerplant.
I use the Supermags in my Beeman P-1 exclusively, and also use them in my RWS M-36. Both of these pieces have heavy duty powerplants that need the buffering of a heavy pellet - in my opinion. The Supermag provides this in a wad cutter, and keeps the rounds form going supersonic. Things I would have changed:I have to size each tin as they are uniformly too large for the breeches of both my P-1 and M-36. Indeed, without being pell-sized, the compression is such as to blow out the O Ring seal of the P-1.
I would like to see a couple of sizes (diameter) in the Supermags. As provided, they just are too tight for my two main .177 pieces.
What others should know:Despite my issues with the pellet diameter, the Supermag is a superior pellet in terms of mass and uniformity. My pell-sizer makes these consistent shooters.
They are clean and do not leave one with lead-soiled fingers. They are probably NOT appropriate for less than magnum powered pieces.