Question on Neck Tension

[Elkbane]

I'm running both Lapua,expanded .243 brass) and Remington brass in my 260 Rem and need a little help from you guys.

I took a Forster .243 bushing bump die and had the neck hole expanded so I could use it for the 260,which Forster doesn't make). I have the necks turned to consistent thickness and my loaded round is .289' neck. I have a 289 bushing and it works well - gives consistent TIR < 1 thou, but the sized neck measures .289 and there is almost no resistance while seating. WHat kind of neck tension should I be shooting for? I'm loading 123 gr Lapua Scenar's seated to a 10 thou jam and am thinking I need it to be snug enough so that the bullet isn't 'soft seated' so as to move while chambering.

Thanks in advance,
Elkbane

 

[halfmoanut]

Most guys run .003thou so the bullet don't get stuck in the lans in-case you have to un-chamber a round.So you would want a .286 bushing or maybe a 285 depending on witch brand redding or wilson.

 

[Preacher]

I like to keep applying neck tension until I get a very small hint of a circle just below the point of the bullet.... usually, but not always it's a bushing at .002 over a loaded round.. but thats in my chamber......

 

[Elkbane]

Thanks guys. I ordered a couple smaller bushings - will try them out late in the week.
Elkbane