I've shot them quite a bit in various cartridges. They're very good, performing right alongside those other brands in most loads I've worked up with other primers in cartridges like the .17 Fireball, .221 Fireball and .223 Remington. Of course, some loads work better with one primer over another, but I'm certainly including the Tulas in any of load work-ups from now on.
The model I bought is the standard small-rifle primer, which has a copper cup that's on the thin side, so Tula doesn't recommend them for AR use. But I haven't had any problems with them in bolt rifles. Have shot several hundred so far with no misfires, pierced primers, or anything else.
