It never ever jammed on any ammo. Ayoob claimed that LA Sherriff’s dept. analyzed 1 to 10,000 rounds with +P+ devoid of breakage or considerable have on. I still kick myself for offering it.They did have some pre-1940 rifles with range codes. I'd a superb chuckle on the video since one of them remarked that a 1938 model was lacking the entrance s