Got 100 pcs. of mixed, once fired range brass for $6.00 from my local gun shop in 270 win. All good brass but this one case, it's Winchester brass and I found it in inspection after tumbling. A fine example on the importance of constant inspection. What if I missed THIS ? How did this happen ? What did this feel like to the guy that fired it ? Other piece is 454 casull. A shooting buddy had a new to him .454 revolver and some ammo came with the deal. Came over to try it out and in the first 6 this happened but he didn't notice it till it was HARD to eject, Winchester brass also. Notice the mouth is not split. I told him to forget about the rest of that ammo and we'll order all new brass & bullets and start from scratch. New brass will be Starline, I've had good reloading over and over with it in 45LC. When he comes back with the revolver I'll check the chambers dia. and slug the barrel to be sure of things and if something seems odd I'll tell him to take it to my smith. BTW it's one of those S&W-45lc-454-460mag revolvers. I think it needs to be looked at real well before loading for it, remember it's 2ed hand. Could have been just the brass but, safety, safety, safety.