Years back always used Remington primers. Bought some rem-umc 9mm ammo to shoot in my Beretta 92fs. Happened to pick up an empty and had a neat little hole in it. In fact just about every one had a hole. Cost me a new firing pin and spring. Been using Win LR,SR,LP,and SR for close to 20 years no problems. Only other brand is CCI LRM magnum with IMR 4350 and 165 gr Nosler Ballictic tips pr 168 gr SMK's. Frank