That last photo answered the few questions that occurred to me earlier in the thread--which concerned nose diameter. That would be well-nigh perfect for almost any 30 caliber throat and leade, I would think--even the short & abrupt 30/30 leverguns.
I loaded a few rounds of 30-30 with the bullet about 15 minutes ago for my Rem. 788 , 30-30 Win.
They were lightly crimped in the crimp ring.
They fed through the magazine and chambered smoothly.