Sierra Publishes 6mm Creedmoor Load Data

[mensajd]

https://sierrabullets.files.wordpress.com/2017/10/6mm-creedmoor4.pdf

Excellent range of bullet weights, from varmint bullets to high BC target bullets. Includes RE 16 data too.

The max 107gr H4350 powder load is exactly what I ended up with but using 105gr Berger hybrids, Hornady brass, and CCI BR-2s to this effect:

 

[Zero333]

Looks like the 6mm Creedmoor can take some serious pressure. Judging by the velocities Sierra published.

 

[urbanrifleman]

Now why is this better than 243?

 

[JaoeyP]

Now why is this better than 243?

I think it's a perception/reality deal. 6mm Creedmoor has factory rifles with 8" or faster twist and factory match ammo with heavy bullets (105gr plus) readily available. If you build a rifle with a 7-8' twist and hand load I'm not convinced there's any significant difference. If you're going to load 110 gr SMKs, the 6mm Creed may have a slight advantage if you're going to use a DBM, but even this may be irrelevant with the mags (American Rifle Company and Alpha Mag come to mind) that have 2.9" plus of internal length.

 

[mensajd]

Looks like the 6mm Creedmoor can take some serious pressure. Judging by the velocities Sierra published.

SAAMI MAP for 243 is 60k psi. There isn't yet a SAAMI MAP spec for the 6mm Creedmoor, but since it is a necked down 6.5mm Creedmoor, one may reasonably infer that it is loaded to meet the latter's 62k psi pressure constraint.

Chuckhawks.com has an interesting article on 243 vs. 6mm Creedmoor: http://www.chuckhawks.com/compared_243_6mmCreedmor.html