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Which 308-243-6.5 AR would you buy

Quick range summary for the MP 10. First with a quick cleaning. I figure since the designers obviously went light with this 18" barrel I would stick with the theme and put my lightest appropriate optics combo on there consisting of a 2-7X33 scope and aluminum rings. This also happens to be the only optics combo I have, so there is that. This optic combo is lighter than many scopes by themselves let alone the mount. So it is a light and straightforward package. Also put on a CTR stock. Lucky to find I had a black one sitting around. Tried two types of ammo. PMC 168 OTM Match went into a 1.4" three shot group at 100 yds. Not bad, until Federal Gold Medal Match 168 gr. went into a 1" group with two shots almost touching. This from an overweight crosseyed shooter with a 7 power scope. After final adjustments, shot some steel out to 250 yds. No misses. Just point and send it. This rifle is sweet. It piled up the brass in a neat little pile for me. Really could not be happier.
 
I was dissatisfied with the selection of .243s available, so I built one. (1/8 barrel from X-Caliber.)

I ran out of use for .308. I found a few boxes of premium hunting ammo from at least 15 years ago. I had to go through my entire friend list to find anyone who still uses it to give it away. I would rather build more uppers in 6.5 CM and/or 7mm/08 than doodle around with .308 anymore.
 
mljdeckard said:
I was dissatisfied with the selection of .243s available, so I built one. (1/8 barrel from X-Caliber.)

I ran out of use for .308. I found a few boxes of premium hunting ammo from at least 15 years ago. I had to go through my entire friend list to find anyone who still uses it to give it away. I would rather build more uppers in 6.5 CM and/or 7mm/08 than doodle around with .308 anymore.
Click to expand...

How do you like the X-caliber barrel? Where did you buy it from?
Was readily available or was it a special order?
I have a .308 upper that I could convert to .243, but most barrels available are 1:10 twist. Recently found .243 brass and my bolt gun is 1:9.25 twist. Too slow for a 105Gr. bullet on inventory.
 
Tinker-S said:
How do you like the X-caliber barrel? Where did you buy it from?
Was readily available or was it a special order?
I have a .308 upper that I could convert to .243, but most barrels available are 1:10 twist. Recently found .243 brass and my bolt gun is 1:9.25 twist. Too slow for a 105Gr. bullet on inventory.
Click to expand...

I ordered mine straight from X-Caliber. They have you fill out the specs, profile, ROT, etc. I went with 1/8 specifically to run heavier bullets.
 
rizbunk77 said:
9.1 before or after optic?
Click to expand...

I have an 18” PSA10 and it weighs just over 8 lbs out of the box. Picked it up last year for $800. It’s phenomenally accurate, and I’m very pleased with it, but with optic and all it’s heavy, as most AR-10s are. If I were in the market today I’d be looking very hard at the Ruger SFAR.
 
rizbunk77 said:
I actually tried to put my LaRue trigger in there first, but it did not install easily. I think if I were willing to remove the safety selector then the LaRue would have gone in. The Geissele trigger unit fit without removing the safety.
Click to expand...

I own several LaRue MBTs and every one of them required removing the selector to install. No big deal for what’s the best trigger for the money, IMO.
 
12Bravo20 said:
unless one wants to resize 6.5 Grendel brass.
Click to expand...
It is pretty easy and a good choice for someone to try as their first resizing effort, but I also have a lot of Grendel brass as well as 6mm projectiles from other chamberings.

As far as OPs question, I think the 6.5 CR is the most versatile. I have put together a couple dozen large frame ARs from 22 to 35 caliber. An 18" .308 Win and a 20" 6.5 CR are the most popular ones that my friends/family enjoy shooting. They like that they can ring steel out to 1200 yards with the 6.5 and 800-900 with the .308 pretty easily.

They can be a tad heavy to carry all day hunting, so I have a lighter weight 16" .308 AR for that. I am intrigued by the SFAR but hesitant to get something with such proprietary components since I always roll my own ARs. But if you aren't going to be putting it together yourself I'd look hard at the SFAR. Best of luck.
 
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Buzznrose said:
SFAR 16" is what I'm after. I finally have almost enough Cabelas points to buy so I've been checking daily. They notified me by email it was back in stock but by the time I got to the site they were out again.

The 20" was available on the site for almost a week, but the 16" doesn't last long in stock. I'm also thinking it will get a suppressor in time so I want the short barrel. If I was not going to suppress, I'd go with 20" model.
Click to expand...

Well, the 16” showed up on the Cabelas website this afternoon and I locked one in. Now I have to save up for a scope but used $1000 Cabelas points so my out of pocket cost was a bit over $150 after tax and 5% military discount.

https://www.cabelas.com/shop/en/ruger-sfar-semi-auto-rifle?searchTerm=ruger sfar
 
My most accurate rifles are both 6.5 Creedmoor, one is JP Enterprise 22” barrel, bolt & crrier, captured buffer on Sharps Jack receiver set, Giselle trigger, PRS stock, Atlas bipod, Leupold 8-25x50
Jack65.jpg

Second is my SiG SSG shown here with the original 308 barrel and the 6.5 Creedmoor with a black stainless fluted Bartlein barrel.
ADA32-C33-383-A-44-EF-96-FA-4-CB878-C3631-E.jpg
 
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