I had this problem about 2 to 2.5 years ago. Tin was labeled Remington #11. I dumped the tin into my snail capper as so many times before. righted the ones that needed to be corrected and noticed that when closing, it seemed a bit off. I wrote it off as imagination and headed to family farm to shoot. Glad I did not do this at a group function. Tried to get caps to feed, no luck, tried to open, NO LUCK! They were tall enough that when I closed it it had really jammed up the mix. I am not by nature a patient or delicate man, and I really wanted to shoot. Well, by the time I got it open, capper was ruined and none of the caps would work on the nipples. I had just enough caps in an old tin to fire off the five I had loaded and that was it. I was royally ticked off. I had to clean the gun having only fired 5 times, in anger the capper was in two pieces and the internals were somewhere in the barn and I spent ten minutes picking up ruined caps out of the dirt. I fired off a terse email to Remington and did get a tin of 11s that were really 11s. I have switched to inline cappers, which can be frustrating to load, but are more forgiving and if you get a high one, you know it. I think I am up to 15 or 16 straight line cappers. People stare when I pull them out.