What if you do put too much taper crimp on a thick plated bullet. Does it actually hurt anything? Mine distort the bullet just a little but the plating does not come off when I pull them. I think the pressure inside the case expands the case when the round is fired so I do not think there is a lot of "pull" on the plating.
Thick plated bullets can take it, but the vast majority of plated bullets on the market are thin plating, and you will break through the plating with improper crimp. We do not judge plating or crimp based on pulled bullets, but rather how they perform in the barrel. Plated bullets will shed their plating once the plating is fractured due to poor crimping practices. You can see it on the target paper. Looks like miniature shrapnel holes around the bullet hole.
Right now I fell better with a tight crimp because I have been reading for years and years how important a tight crimp is.
If we start with the concept that Taper Crimp is to erase the belling, then let's look at what happens when the belling is
not properly erased.
So without proper TC there is no chambering. Therefore we could say that most of Taper Crimp's job is to satisfy the requirements of the chamber,
not the cartridge. The chamber is like mamma, and "if mama ain't happy, then ain't no one gonna be happy".
So this "light taper crimp" and "heavy taper crimp" is a bunch of nonsense. There is only the small dimensional range that satisfies the needs of the chamber, and allows the cartridge to fully enter
and properly head space. And that small dimensional range has measurements assigned to it, and can therefore be described best by
numbers. Numbers that can be checked and then duplicated by more hard
measurements.
"Tight taper crimp" means nothing. No one can duplicate it. In a lot of ways it's closest cousin is the teenager answering with the term "Whatever !"