A friend of mine bought a Marlin 336 youth gun, because he likes short, handy rifles. No big deal. He bought a couple of boxes of CoreLokts to run thru it, and fully one third of them would not fire. Not on the first try, or the second, or the third try, either.
In addition to not firing, the ammo that DID fire showed signs of excessive headspace, right out of the gate, flattened primers like you wouldn't believe, lots of case stretch, the whole bit.
He wasn't much of a gambler, took the rifle, and the ammo, and traded it off for something else. It WAS a Remlin, made right after the takeover, so between the rifle and the ammo, he was pretty sour on the whole deal.
That's odd. I've seen many empty casings that were fired from .30-30's that did in fact have excessive headspace but I've yet to see one stretched case or flattened primer. I have seen a whole bunch of protruding primers because there's simply not enough pressure to stretch the case and reseat them,
