rcmodel
Member in memoriam
Sure it can be.AND 9mm can indeed be roll crimped
But, It's not supposed to be!
It wasn't designed to be.
And no factory loads ever have been.
So, my conclusion is?
You are doing something you shouldn't be doing!
rc
Sure it can be.AND 9mm can indeed be roll crimped
You need to fix your neck tension. That is what holds the bullet. No factory ammo, +P+ or whatever, is roll crimped. either your sizer is too big, or your expander is too small, or a little bit of both.You didnt say what gun you have. I have seen comments online that folks with Walther PPQs have had problems as the PPQs require a shorter OAL of 1.08.
AND 9mm can indeed be roll crimped. My RCBS 9mm luger dies only came with a roll crimp. I use that roll crimp with my carbide set for all my loads as they are +P to prevent set back. A taper crimp will not cut it. I have had to roll crimp factory loads that setback.
I agree completely. Without a doubt it's proper neck tension which holds the bullet in place, not a crimp. In semi-auto ammo the crimp, in reality isn't a crimp, it's actually ironing out the flare or bell placed on the neck to facilitate proper bullet seating.You need to fix your neck tension. That is what holds the bullet. No factory ammo, +P+ or whatever, is roll crimped. either your sizer is too big, or your expander is too small, or a little bit of both.
Fix the neck tension problem and you will be fine with a light taper crimp to remove the bell.
First, a proper taper crimp has very little to nothing to do with rention, case sizing does. The taper crimp has to do with the cartridge being able to "feed". A properly sized cartridge in a serviceable case takes multiple blows with a hammer bullet puller to break it loose---ask me how I know.AND 9mm can indeed be roll crimped. My RCBS 9mm luger dies only came with a roll crimp. I use that roll crimp with my carbide set for all my loads as they are +P to prevent set back. A taper crimp will not cut it. I have had to roll crimp factory loads that setback.