Stag 10 300WSM

[Bfranklin]

Is this possible?

KAK in the US has made some uppers compatible for DPMS profile AR-10s. I can’t seem to find info if the upper is dedicated to the 300WSM or if it is simply another compatible caliber.

 

[Astute Observer]

This would be epic

 

[griffin86]

X-Caliber is going to make them. I've seen one video of it.

 

[Bfranklin]

X-Caliber is going to make them. I've seen one video of it.

Cool! So the dimensions of a DPMS pattern upper can facilitate the caliber?

Edit - from the KAK Industries website:
"UPPER MODIFIED LR308 UPPER TO CLEAR LARGE CASINGS"

 

[griffin86]

Cool! So the dimensions of a DPMS pattern upper can facilitate the caliber?

Edit - from the KAK Industries website:
"UPPER MODIFIED LR308 UPPER TO CLEAR LARGE CASINGS"

You probably have to reload so the ammo will fit in the mags. And get a custom bolt.

 

[Bfranklin]

You probably have to reload so the ammo will fit in the mags. And get a custom bolt.

I've never tried to fit 300 wsm in 308 mags so I assume you would be correct. KAK does make a bcg for 300wsm so that's not a problem.

 

[griffin86]

I've never tried to fit 300 wsm in 308 mags so I assume you would be correct. KAK does make a bcg for 300wsm so that's not a problem.

The 300 WSM is 2.860” and the mags are good for 2.800”

 

[Spcamno]

I thought about a project like this last year and still doing research on this:

https://www.canadiangunnutz.com/forum/showthread.php/1812370-300WSM-in-AR10-Platform

 

[45ACPKING]

so if you have to reload to shorten OAL , what are you losing by doing that?
Does it require a reduced load to accommodate the deeper bullet seating?
Are there round nose 300wsm bullets that would be shorter due to the stubby nose.....?
what bullet weights are they preferring and what do the ballistic charts for those rounds work out like?

I went with .338 federal as a more cost effective way of getting more out of a typical .308 platform but I think it's cool that they can stuff a 300wsm into an upper nonetheless.