6CM vs 25CM in a 20" Rifle?

[Rancheria]

Looking to build a lightweight sheep setup. More than likely will be shooting the respective eldx bullet out of the cartridge I select but hard to ignore some of the high BC monolithic from companies like McGuire. Need the package in a 20" barrel.

 

[Harvey_NW]

In this comparison based on the fact you mentioned high BC monolithics, 6 CM is the answer for speed alone. The 25 is a bit anemic in the CM, and would be better suited in a 284 or PRC case for that type of setup. My 25 CM would only push 133's around 2,700fps damn near at pressure in a 19" bbl, my current 6 CM 20" should push a 108 over 2,900 once I finish forming brass and juice the charge up.

 

[MuleyFever]

It wont matter unless you are shooting out to the max range of the cartridges and need the extra distance.

I have both and like the 25 more. Just my preference but I like the heavier bullet.

 

[Speaks]

Have not shot the 25 but my 6cm is right now my very favorite gun.

As others mentioned 25 might be real nice if you added a bit more juice to the case. Something like a 25 PRC seems like it could be sweet. Lets hotrody than the 6UM but more than a 6.5 PRC.