My next upper?

[EvilD]

I really have no real use for such a beast other than I fukking want one, and maybe for boar when I move to a free state

http://www.thefirearmblog.com/blog/2...rtridge-ar-10/

[24Pink14Stink]

Nice!

[Meketrefe]

If you like big and heavy calibers I would keep it below the 375 or 357. This is why...

Straight cartridges specially in pistol bullets larger than 375 are problematic in the AR. lots of feeding issues and potential safety issues with a rimless design.
Also I am not sure why they compare a cartrige for the AR10 platform with other 3 cartriges for the AR15 platform.
They are two different platforms with complete different set of dimensions and weight.

For example, for the AR10, the standard 358 winchester with a 225gr Barnes TSX launched at 2500fps will have a lot more speed
and energy at any useful range other than a few yards in front of the muzzle.

The 45 caliber bullets are so inefficient in terms of flying that although a 358 or 375 caliber might have less weight and energy
at the muzzle it has a lot more speed and at only 40 yards it is already ahead of the 45 raptor with a lot flatter shooting.

The standard 358 winchester has more speed and almost the same energy at 400 yards than the 45 raptor at 200 yards.
Also the 358 winchester is as simple to load as popping 308w brass into the press, pushing down to neck resize and presto!
...plus you have ammo and a few upper makers all ready to go.
It can also shoot affordable 357 and 9mm bulk bullets for practice and average hunting.
357,358 bullets also go up to 300 grains if needed but those heavier than 250gr are more suitable for the largest african magnums.
The great 358 bullets and deals are one of the reasons I am making an AR15 version for gunner and I but if it was for the AR10
I would not hesitate on the 358 winchester.

https://www.buffalobore.com/index.ph...t_detail&p=246

Muzzle Velocity @ 2500 fps for Item 41B
358 Winchester 225gr TSX

From left: 308Winchester (Parent), 338 federal & 358 Winchester

[EvilD]

I probably wont' ever get one, just think its badass