and coated lead bullets jump / setback the least.
You made me have to go out to my loading room and load up some dummy rounds.
GFL 9mm brass OAL 1.10, which I consider to be the a-typical good 9mm brass due to it's wall thickness at the mouth.
Resizing and neck die is RCBS Carbide.
Acme 9mm coated vs Xtreme 9mm plated, both 124gr, and both mic at .356" , for neck tension test
They both made 50lb with my shimpo strain gage machine.
I then tried it with .FC. brass and got the same thing. I have learned that anything over 40lbs is good to go with all maximum loads I've tested in 9mm.
50lb on that gage won't slip at max load of anything in 9mm Luger.
DO NOT TRY THIS!
I overloaded some 9mm loads with Power Pistol by .3 gr over max and tested for setback with 124gr Berry's plated TCFP 9mm that mic'ed at .356" and shot one round, and check the next round and did this three times and had no setback. These rounds checked out at 50lbs, ( I only checked them to 50lbs because that what the machine is calibrated to). It goes to 100lbs.
My dies are "off the shelf" RCBS carbide dies, unfortunately they are the only 9mm dies I have. (With the tension they make they are the only ones I need), so I can't test any other brands.
This is not REAL scientific but I couldn't make the HighTec coated bullets slip, or the plated bullets slip at 50lbs, so I'm certainly not worried about either one, at least with my dies.