Re: What dies are you using?
Hugo121175, what Redding die do you use to bump the neck?
For .260 Rem, I'm using Redding body die, Redding Competition bushing neck sizing die and Redding Competition bushing Seater. The Competition (micrometer adjusting) NECK SIZING works but is overkill, the non-micrometer one is just as good.
I also have a 260 Wilson seating die which is good.
I'm using Lee dies for my 308 and am not at all sure they are that great. The sizing dies seem to put a crimp on the neck, right at the top rim. And the sizing dies aren't adjustable. And,, the neck sizing die feels weird the way you have to pull on the handle of the press so hard, and get no movement, to get the case small enough to hold the bullet. So I am upgrading my 308 dies.
I'll just make one observation. Since brass seems to vary quite a bit in thickness, it seems to me that you need dies that are adjustable in neck tension as well as how far down the neck they size. But again, I'm no expert in any of this. It almost seems like you need dies that are custom made to your chamber and brass. I don't know if all that work and expense would be worth it. I am also one that doesn't see any benefit in full length sizing every time. But that's just me. I'll full length size when necesary (and mark those rounds as such so they don't get shot in the same series as the ones neck sized only). But I like neck sizing only, most of the time. I'll admit, I've never tested the difference in any scientific way. Someone should.