WHAT cal. AR-10 BUILD WOULD YOU DO?


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VTmtn.man
April 5, 2013, 06:52 PM
So lets say you've got several .308's in all sorts of configurations & just finished a .260 Rem. You have all the components for x1 more except for the barrel. What would be a fun cal. to make. You have no utilitarian need for this rifle, just a play thing to do on a whim.... You enjoy shooting between 100-500 yd but don't need anything specific for any distance... & You reload your own ammo

.22-250, .220, .243, 6mm Rem, .257, 6.5x284, creedomore, .284, 7mm/08, .338 etc. etc.

(The last project .260 Rem)

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mnhntr
April 5, 2013, 07:10 PM
Already have .308 and .260 then I would go bigger. .338 federal or similar.

mnhntr
April 5, 2013, 07:11 PM
Nice rifle by the way. I love the .260

Bobson
April 5, 2013, 07:25 PM
I'd go .22-250 or .243. Can't really justify either except for saying both cartridges interest me and always have. I'd lean toward .243, personally.

BK
April 5, 2013, 07:26 PM
.243

JustinJ
April 5, 2013, 07:35 PM
I like the 6.5 creedmoor but would want to stretch it out past 500 yards.

The_Armed_Therapist
April 5, 2013, 08:06 PM
.243! Easy choice for me. Ammo is still relatively cheap, it would be great for long-range work, more power than .223, not as much recoil as .308, etc.

X-Rap
April 5, 2013, 08:06 PM
I will be watching with interest since I have 10 Pmags ordered from the "Airlift" and presently don't have an AR of the larger variety.

MErl
April 5, 2013, 08:24 PM
358win

VTmtn.man
April 5, 2013, 08:34 PM
MErl,

did you mean .284 Win. ? For what reason would you choose the round you suggested?

VTmtn.man
April 5, 2013, 09:06 PM
MErl,

Thanks for your post. I never heard of the .358 and should have done a better search before responding so fast. I understand that it is a heavy bullet / round, short range intended. I'll search further on its brass and bullets, but great suggestion! I'll have to see if a barrel for this can be crafted and how the cartridge fits in the mag / feed through a gas gun.

Great to learn about an obscure cartridge!!! That is why I made this post w/ ?'s

jim243
April 5, 2013, 09:07 PM
243

lobo9er
April 5, 2013, 09:10 PM
.243 seems like a nice caliber to have on hand. I dont have one but have read and heard nothing but good stuff. from varmints to Black Bear in a pinch. Only other would be a .270.
will a 270 work with am AR10?

7.62 Nato
April 5, 2013, 09:14 PM
.243

VTmtn.man
April 5, 2013, 09:20 PM
No, a .270 is a necked down 30/06 with a longer bolt throw than a .308 'OAL' cartridge length 'tip to tail' which would not work in an AR-10. Great round though, I have them in Browning A-bolts & they are generally my 'go to guns' come Nov.

VTmtn.man
April 5, 2013, 09:28 PM
Come to think about it, has a .270 WSM ever worked in an AR-10?.... Worked well...? I know that the mag would fit a few less rounds but the feed angle etc.???

lobo9er
April 5, 2013, 10:08 PM
Oh right, right 308 OAL. I didn't even know a 270 wsm was out there. what about a 300 WSM? that would be fun too in a AR!

lobo9er
April 5, 2013, 10:11 PM
......

dvdcrr
April 5, 2013, 10:20 PM
6MM

chaser_2332
April 5, 2013, 10:31 PM
6mm creedmoor hands down

VTmtn.man
April 5, 2013, 10:32 PM
dvdcrr,

? as in the Remington version or in a 6mm version like the .243? Surprisingly the 6mm Rem brass has not sold at my local dealer, might be an easy thing to reload for.

dvdcrr
April 6, 2013, 10:29 PM
I was thinking 6mm REM

rcmodel
April 6, 2013, 10:37 PM
I have no opinion.

I can't lift or carry a 10+ pound with glass & sling AR-10 like the one pictured from the truck to the bench anymore.

rc

Mamertine
April 6, 2013, 10:42 PM
I"d go for the .243, but I'm fond of the caliber. Also an advantage is it should be able to use the normal AR10 mags. Right?

dvdcrr
April 6, 2013, 10:54 PM
6mm rem is tapered and should be smooth feeding and reliable. I'd go for a 1/9.5 twist. Or 1/9.

dvdcrr
April 6, 2013, 11:01 PM
Mag lengt is 2.80 and 6mm rem coal max is 2.825 so we are right in the ballpark. If you find a barrel maker that can do one please pm me the details!

dvdcrr
April 6, 2013, 11:21 PM
http://i1243.photobucket.com/albums/gg556/dvdcrr/SU1BRzAyNDIuanBn_zpsb08bf18d.jpg
I put some 100 gr factory core lokt rounds in an ar 10 mag. Looks like they fit fine and would feed

HKGuns
April 7, 2013, 12:40 AM
Isn't AR-10 a 7.62 by definition?

chaser_2332
April 7, 2013, 03:36 AM
That's why u need to go 6 creedmoor over a .243, almost the same speed with the creedmoor being the more effeciant round by case design. Also was made to offer a better 6mm round for the AR platform

wlewisiii
April 7, 2013, 01:16 PM
I'll give a vote for the 7/08. Fun cartridge and would be pleasant out of an AR10 type rifle.

VTmtn.man
April 7, 2013, 01:16 PM
dvdcrr,

if 6mm Rem does interest you check out harrisbarrelworks.com I talked to them recently about my next project and wait times aren't too long. In looking at balistic charts, the 6mm Rem has a bit more 'umph' than the .243. I'm starting to get interested in this round...

meanmrmustard
April 7, 2013, 01:24 PM
I'd go .260 Remington, or 6.5 Grendel.

VTmtn.man
April 7, 2013, 01:31 PM
Just did a .260 Rem (start of the post), 6.5 Grendell is an AR-15 platform. I like the way you think though, hense the latest .260

VTmtn.man
April 7, 2013, 02:39 PM
To 'rcmodel',

In a SHTF senario, however unlikely, our founding fathers would probably have intended that you muster up the fortitude to handle that extra 3# of rifle & show up with something that could 'bark'... Regardless, in my book, you are a patriet if all you bring to the table is a slingshot and a desire to preserve our Constitution and way of life, as it was originally intended. With all due respect, & thanks! E

meanmrmustard
April 7, 2013, 02:43 PM
Just did a .260 Rem (start of the post), 6.5 Grendell is an AR-15 platform. I like the way you think though, hense the latest .260
Hmm...true. Shows what I know past 556.

Then I vote Creedmore. I dig the mid 6s these days.

VTmtn.man
April 7, 2013, 02:54 PM
Thanks 'meanmrmustard'!

I thought long and hard about going with the .260 vs. the Creedmoor. Brass was the primary issue but I really do like that 6.5mm, BC bullet and having x 2 might be practical. I guess that I would just have to have some specifically, dedicated brass if I went with the creedmoor. I don't think that you could re-work .308,7/08,.243 like you can with the .260. Staying away from the 30 cal. is an advantage these days in supply / cost.

meanmrmustard
April 7, 2013, 02:58 PM
Thanks 'meanmrmustard'!

I thought long and hard about going with the .260 vs. the Creedmoor. Brass was the primary issue but I really do like that 6.5mm, BC bullet and having x 2 might be practical. I guess that I would just have to have some specifically, dedicated brass if I went with the creedmoor. I don't think that you could re-work .308,7/08,.243 like you can with the .260. Staying away from the 30 cal. is an advantage these days in supply / cost.
Also, the BC of those longer 140gr 6.5 bullets are stepping on the toes of heavier .30 bullets. Better for the shoulder AND long range.

As a shooter of .260 and 6.5 Swede, I've learned the benefits of low recoil and better ballistics that the mid 6s have to offer early on.

I'd stick to a chambering in that area myself.

TBH
April 7, 2013, 05:35 PM
22-250. High speed, no recoil. You already have 308 and 260, why not something fast and flat

VTmtn.man
April 7, 2013, 05:53 PM
Good point 'TBH',

I'll have to look into how my 'hot' .223 rounds stack up w/ the .22-250. I've got a couple of bull barrel .223 in 22" & 24" & they have to be used for something from time to time...

madcratebuilder
April 8, 2013, 08:53 AM
Already have .308 and .260 then I would go bigger. .338 federal or similar.
+10



22-250. High speed, no recoil. You already have 308 and 260, why not something fast and flat

fast and flat...Grendel on the AR15 chassis.

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