9MM Luger

#1 · May 11, 2008, 7:22 pm

Hi Dillon,

My SDB had arrived and I'd finished setting it up.

I did not adjust the sizing die because the manual said I don't have to.

The result cartridge from SDB looks a bit like a Coca Cola glass bottol.

The left side I'd used Lee dies to resize and seated. The case wall is very straight.

The right side I'd used SDB. Note there is a minor curve-in.

Is this normal?

The fitting of the finished cartridge by SDB is much better than the Lee.

But just to find out if the bottol shape is fine.

#2 · May 12, 2008, 4:23 pm

This is normal and correct to the way we design the size die. 9mm is a tapered case, so we over-resize the neck to ensure the bullet is tightly held in place.