6.5 neck size

[The mailman]

I have a 6.5 swedish mauser and I have a 6.5 creedmoor.  Would I be able to neck size either one of them with the same 6.5 neck sizing die?

[RED333]

https://en.wikipedia.org/wiki/6.5×55mm  

Neck diameter	7.60 mm (0.299 in)

 

https://en.wikipedia.org/wiki/6.5mm_Creedmoor

Neck diameter	.2950 in (7.49 mm)

There appears to be a small diff.

 

 

[Swede]

They both use .264 bullets, so you should be able to use the same neck sizing die if the shoulder configurations let you size enough of the neck to securely hold the bullet.  I tried to open the chamber and cartridge drawings for 6.5x55 and 6.5 Creedmore on the SAAMI website site, but they wouldn't open.  Maybe the SAAMI website will work for you.  When you neck size, the 6.5mm expander plug will open the inside of the neck to the proper diameter, however, there may be a difference in the outside diameter of the two cartridges.

[Jakeway]

If it's a Lee Collett Neck Die you might be able to adjust the die to the right depth in the press to make it work.  Youd hav ebetter luck using a Creedmoor die to size the Swede than the other way around.

  When I first got my 6.5 Creedmoor I tried to neck size it with my RCBS 260 REM neck sizing die.  it didn't really work.  It sized the neck, but only about 1/8" before the die bottomed on the ram.  Since the Swede is longer than the 260, I think you'd have to grind some off the bottom of the die to allow you to insert it deep enough into the press.  Spend $45 and get the Lee Ultimate Die Set for the Creedmore.  Keep the Collett neck die and sell the rest if you already have a seating die and FL die.