[Unclenick]

It looks in your first photo like your load is giving you pregnant cases (bulge on one side where the feed ramp cut into the barrel leaves it unsupported) and that the sizing die is flowing the bulge backward, but can't get close enough to the end to actually iron it out. I wonder about the brass quality or else the shape of your chamber as a result.

The only solution I am aware of is to buy a Lee factory crimp die and remove the crimp ring and adjustment plug and use their bulge buster kit to push the case in until the semi-rim just stops short of trying to enter the carbide ring, then use a brass drift punch to knock the case back out again. Tedious.

In the meanwhile, load up some rounds with about 4 grains of Universal instead of 5 grains, and see if it shoots and the cases resize better. If they do, then the bulge hypothesis is verified and is not just an optical illusion.