Originally Posted by
thopkins22
If the bolt was far enough rearwards that it picked up the new round, it should have enough potential energy to chamber a round...something slowed or stopped it. This is assuming that your spring is still in spec and that it was well lubed.
It is, it was.
Bolts don't come forward with any extra force if they went backwards super hard...once it stops, it only has the force of the action spring pushing on it and the buffer, and once they're moving you gain the momentum of the buffer and BCG.
I agree. I think the Noveske lower plus the Lancer mag was the issue. The round probably nose-dived. Lancer mags do that with out of spec lowers if they don't insert far enough and only the bottom of the lugs strip the round. I'll have to use PMAGs in my Gen 2 Noveske lowers I believe. That's what I attribute it to thus-far is a nose-diving round that BARELY made it out. On my other Noveske, sometimes they would just jam half out of the mag, maybe once every 3-400 rounds on a reload when the bolt-rease was used on a fresh mag, although sometimes now that I think of it, I do recall it "feeling odd" cycling a time or two. Every time I tried to duplicate it, it would chamber the top round in the same mag, even if I BARELY dropped the bolt, much less from full lock-back. Stumped. Sometimes it did...sometimes not. Then I compared what part of the bolt was hitting the back of the casing to a known high quality mil-spec type lower from Daniel Defense.
So yes, it's safe to say that short stroking isn't your problem. I'd measure your action spring and see what you get.