Will 6 Creedmoor go the way of 7 SAUM?

[Refugium]

Just picked this up today. The SAAMI .183 freebore seems to accommodate the heavier bullets adequately. We’ll see how it shoots soon enough.
View attachment 1018695

Sweet.

Post count…..

My bad. Newb here obviosly.

 

[Refugium]

Just heard from nm.otter on the Tikka 6 Creed thread that T3X Lites are now posted on the Tikka website. There is hope!

 

[Refugium]

Multi-quote is your friend...

Heard. Also just saw your update on the Tikka 6 Creed thread. Thanks for being on top of that and for the hand-holding! I'm first in line for a 20" T3X Lite! Hopefully they don't do something dumb like only offer it in Europe.

 

[nm.otter]

just saw your update on the Tikka 6 Creed thread. Thanks for being on top of that

Actually @jmac42 posted it first -- in another thread.

 

[Aperventure]

I'm seeing 6cm offerings all over the place, and no real comparison to 7saum at all. I really like my 6cm, its an excellent cartridge that improves in some ways on the perennially popular .243

Do you mind elaborating on what ways the 6cm improves on the 243? I am considering both and the 25cm for my next rifle

 

[Marbles]

Do you mind elaborating on what ways the 6cm improves on the 243? I am considering both and the 25cm for my next rifle

30 degree shoulder, so less brass stretch when reloading.

Correct throat length for heavies, so don't need to spec a custom throat.

If you don't reload, availability of heavies in factory loads.

More efficient use of powder. Should be able to get the same or better velocity from the 6 Creed with the same bullets despite the slightly smaller case. Some of this is a higher SAAMI pressure spec, if reloading and running hot, the straighter walls of the Creed hide pressure better.

The 243 likely feeds slightly better and is more reliable on extraction if running loads too hot.

The differences are small, and not life changing, but enough I just spun on a 6 creed barrel rather than sticking with a fast twist 243 even though it meant getting new dies and brass.

A fast twist 243 with handloads works fine. I wasted a lot of mental effort trying to convince myself to stay with the 243 to avoid the rainbow Creedmoor flag. Considered a 6 GT (Gay Tiger) even. Eventually decided the creed case was the capacity I want for a short barreled 6 mm.

The 25 creed is cool, but with the heave 6 mm bullets I would personally prefer 6 mm over 25.

The cartridges I would like to play with for case capacity to bore ratio are:
22 GT
6 Creed
25 PRC (using 6.5 PRC case)

None of them are different enough to need the difference, it would just be fun.

 

[turbobrick]

Do you mind elaborating on what ways the 6cm improves on the 243? I am considering both and the 25cm for my next rifle

243 is a great cartridge, 6cm gets you the faster twist and better handling of higher BC projectiles. A fast twist 243 is right there with 6cm.

 

[RME]

Correct throat length for heavies, so don't need to spec a custom throat.

You're right, twist rate is mostly what gets talked about but the throat design/dimensions are much improved IMO in the Creedmoors compared to their older SAAMI spec counterparts.

SAAMI 243 Throat


SAAMI 6 CM Throat