Not a .30-30 round, but rather the .25-20 Winchester. First round went downrange from the levermatic, but the second would not feed. Removed the rounds and found this.
Not crimped, figured that recoil wasn't significant. Apparently neck tension is?
Holy cow! Some of that.25-20 brass is pretty thin, gotta wonder if it didn’t squeeze down enough. Not such an issue now that we’re usually making them from.32-20’s.
I always put just the least little bit of crimp on.25-20’s.