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Discussion Starter · #1 ·
Im probably going to be building an AR10 in the near future and want some input as far as what caliber to go with. so far my options include:

7.62 NATO aka .308 aka 7.62X51
7.62x39 aka 7.62soviet
6.5 grendel

FYI: This will mainly be mainly used as a 'just because i want an AR-10 dangit' gun..... but i might lend it to a buddy of mine for deer every once in a while.

any pros/cons or other ideas you guys care to impart are appreciated!
 

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arent 7.62x39 and 6.5gren both used on the ar-15 platform?
 

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Im probably going to be building an AR10 in the near future and want some input as far as what caliber to go with. so far my options include:

7.62 NATO aka .308 aka 7.62X51
7.62x39 aka 7.62soviet
6.5 grendel

FYI: This will mainly be mainly used as a 'just because i want an AR-10 dangit' gun..... but i might lend it to a buddy of mine for deer every once in a while.

any pros/cons or other ideas you guys care to impart are appreciated!
AR10's are usually chambered for 308 (7.62x51). I suppose you could swap barrels for other chambers though. But they would be for bullet cases along the lines of the length of the 308 which are a lot longer than the other ones you have listed.

7.62x39, 6.5 Grendel, as well as even 300 WSSM's are all available in the AR15 aisle.

The main difference between AR10 and AR15 receiver is the magwell is longer in the AR10 to accomodate the longer case ammo.

I still haven't figured out why no one has offered conversion kits for AR10's to smaller calibers.
 

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Discussion Starter · #6 ·
I cant speak to the 7.62x39 from personal experience but i KNOW you can chamber an ar-10 in 6.5 grendel


otherwise, it sounds like an easy win for the 7.62 NATO!
 

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AR10's are usually chambered for 308 (7.62x51). I suppose you could swap barrels for other chambers though. But they would be for bullet cases along the lines of the length of the 308 which are a lot longer than the other ones you have listed.

7.62x39, 6.5 Grendel, as well as even 300 WSSM's are all available in the AR15 aisle.

The main difference between AR10 and AR15 receiver is the magwell is longer in the AR10 to accomodate the longer case ammo.

I still haven't figured out why no one has offered conversion kits for AR10's to smaller calibers.
I guess John A. answered your question... (for an AR10)
 

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I vote 6.8mm! Because I can! Even though it wasn't a choice!! :)
 

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I cant speak to the 7.62x39 from personal experience but i KNOW you can chamber an ar-10 in 6.5 grendel


otherwise, it sounds like an easy win for the 7.62 NATO!
The Grendel setups are built with AR-15 lowers.

Anyway I vote for 7.62 NATO. I have an Armalite AR-10 and love it.
 

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Dont forget .260 Rem or 7mm-08, Both are great callibers based on the .308 and would peg the differant meter.
 

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The 308/7.62x51 is by far and away the best caliber for the AR-10 platform IMHO. Excellent function, accuracy and reliability, combined with a rifle that commercially available and surplus ammo is plentiful for. You can walk into almost any gunshop or wally world on the continent and find decent 308 ammo.

While the Grendel may work in a 10...it WAS designed for the AR-15 platform. The 7.62x39 is also an AR-15 platform round. However, the AR-10 has several different calibers that you can chamber it for, including:

243 Win
260Rem
7mm-08
284Win
35Rem
300Savage
257Roberts
358Win.
270WSM
7mmWSM
300WSM
325WSM

If you want a 7.62x39 caliber rifle...get an AK. They are cheap, readily available and great rifles just to "plink" with or for SHTF work. The 6.5 Grendel, while an extremely excellent round, loses my vote because of the increased cost associated with building a rifle in that caliber, combined with the additional cost of ammo unless you are planning to run your own reloads.
 

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another one here for the 7.62 X51. You can get cheap surplus ammo (comparatively speaking) for practice or training classes. And you can also run nicer ammo for hunting. I think its the best choice for versatility.
 

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Go with what the thing was designed for...7.62 x 51. My FN loves the stuff. Also you can beg, borrow, buy, liberate or steal ammo from the military and shoot it off. I would go with the military NATO spec chamber. HB of CJ :) :) :)
 
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