GimpyLeg: Regarding PMC primers from Wideners
Hi, new username but long-time reader of THR and reloader/shooter.
GimpyLeg, I have always used Winchester primers, but due to the recent shortage, my inventory now includes Magtech, Wolf, and PMC primers.
Bought some small pistol PMC primers from Wideners in November. They are made in Russia, marked "Non-Toxic, Non-Corrosive" on the box, and primers are brass cups marked with "E" on the bottom.
As to performance, PMC primers required 2/10 grain more powder to match the load performance of Winchester/Magtech primers (Stock Glock 22, Winchester 231/Hodgdon HP/38 powder) and just as accurate.
My recommendation would be, since they are both made in Russia and wolf primers have been cheaper ($26/case of 5000 at last local gun show in November) and burn hotter (same charge as Winchester/Magtech) to buy the wolf primer if you can.
FYI, Magtech primers seem to be slightly less tight and Wolf/PMC primers slightly tigher than Winchester in primer pockets (I hand prime all of my cases). I reloaded and shot over 15K non-Winchester primers in 2009, and all the primers have been reliable with no dead primer cups.