I use the 2 1/2 inch Polywad Vintagers for targets and doves and the Polywad DoubleWides for quail. Both are effective, have no recoil, and are advertized to keep pressure levels at 5,000 PSI. I shoot them in a damascus Lefever, a Gr. 2 Smith and a Smith hammergun, and a couple of old English (a Reilly) and Belgian guns. Truth is I shoot the low pressure Doublewides in some guns that don't remotely need them because they're so effective on kick'em-up quail and so easy on recoil...Geo