I went pistol shooting the other day. Brought a box of Remington 115gr 100 count bulk pack. It kept jamming in my P1. It was a magazine jam on almost every mag I filled. I have never had an issue w/ handloads, Winchester white box or Ranger ammo. I only brought 1 mag for it as I brought 6 handguns. I know this mag is good as I used it on many outings without a single issue. My Sig shot the ammo fine and is also a single stack. I noticed the brass at the case mouth was very sqaure and sharp. It was pretty rough compared to Winchester brass. Anyone else have any issues like this? I have had the box for a few years and desided to shoot it up. Very dissapointing.