I've got a New England Firearms (Old H&R Co) single shot bull barrel .223. I also bought 1000 rounds of Wolf, about one in five will not eject cause of case sticking in chamber. Can't hurt this gun, locks down like a vault, but its got to be overpressure to lock up the cases in the chamber.
Won't shoot it in my AR. I've got a digital caliper, will measure next time I go shooting.
RK
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