Necking 308 to 260Rem. procedure?

[ShootDots]

You know the answer to that question..

 

[Erik Cortina]

You know the answer to that question..

;D

 

[tipper999]

You know the answer to that question..

;D

This is a brand new CBI 260 barrel fire-forming 308 Palma brass, I have lived this it's not talk from my arm-chair or mom's basement.
I do have a 260AI that I did this same thing, fire-form 308 palma brass & it was one hole & I mean it was one hole. I sent the target to Benchrest Central & it was lost, 5 shot groups of FIVE ALL one hole. they asked for a backer target that I did not have, THE END PS that 260AI is in my safe un fired to this day,

 

[Erik Cortina]

You know the answer to that question..

;D

This is a brand new CBI 260 barrel fire-forming 308 Palma brass, I have lived this it's not talk from my arm-chair or mom's basement.
I do have a 260AI that I did this same thing, fire-form 308 palma brass & it was one hole & I mean it was one hole. I sent the target to Benchrest Central & it was lost, 5 shot groups of FIVE ALL one hole. they asked for a backer target that I did not have, THE END PS that 260AI is in my safe un fired to this day,

What kind of competition do you do?

 

[people]

Put the 308 brass in a FL 260 Rem. die after lubricating with Imperial wax or similar and form the brass. Most of the 260 rounds I shoot now started out as 308 Win brand brass. If you want to turn the OD's or ream the ID's that is up to you but do it after firing a time or two.
Tom Alves

This is what a friend and I did. He used brass from M80 so he had to turn a little.

 

[people]

What's the procedure for making good 260 brass out of good 308 brass. What I''m thinking about specifically is turning and/or reaming the necks. Do you neck turn first, then size then ream.....size then neck turn then ream???? I can see different sequences that may work well but what sequence or procedure so you guys use?

I'm going to tell you the best way to end up with .260 brass out of .308 brass.

Take all your .308 brass and sell it, use money to order new Lapua .260 brass.

Sorry you are right & lazy , it is fun to work the BRASS a little

In that case make the brass out of 30-06!

Lol. I see your stand up routine is coming along. Way to take a little work (almost standard reloading) and jokingly make it a huge project.

 

[Brians356]

New brass is best to turn. Once fired is most you can have on a cartridge case and still get a good result neck turning.

Wouldn't annealing restore neck to "as new" for softness and turning? Or is there another issue in play here?

 

[ShootDots]

BRIAN356, you could probably take a busing die and size it down with a bushing about 4K under what you use now. THEN use the expander mandrel and you would be fine.. This would allow enough umph on the mandrel to push the imperfections to the outside of the case where you would turn them off..

 

[Brians356]

BRIAN356, you could probably take a busing die and size it down ...

Uh, ... you talking to me? I have no interest in 260 Rem.

???

 

[Erik Cortina]

BRIAN356, you could probably take a busing die and size it down with a bushing about 4K under what you use now. THEN use the expander mandrel and you would be fine.. This would allow enough umph on the mandrel to push the imperfections to the outside of the case where you would turn them off..

The bushing die does not size the entire neck. A standard .260 F/L die would have to be used, in which case, you are ensured to have too much neck tension.

 

[Brians356]

The bushing die does not size the entire neck. A standard .260 F/L die would have to be used,

I was recently pondering the Redding Full Length S-die. It is essentially a body die, but with a bushing for the neck. How does it handle the transition from shoulder to neck, if the bushing doesn't size the entire neck?

 

[tipper999]

The necks will be short, 2 or 3 firings they may grow. I've never had to trim, just true-up the end.