Lets talk new AR15 cartridges

Status
Not open for further replies.
Ironhand54 said:
I often wonder why people try to stretch the performance of the AR15 with custom chamberings when they could just get an AR10

If you want to experiment, that's fine. If you just want the performance it's hard to beat the 308

IronHand
Click to expand...

I have an AR10 and just don't care for it. Just so much bigger and heavier with a lot of reciprocating mass. After taking both out to shoot in the same day I put the AR10 up for sale. I will say I recently handled a DPMS gen2 and they are very very nice handling. If someone handed you one in the dark you really wouldn't know the difference between it an an AR15. 308 performance from a 16" barrel leaves a lot to be desired in my opinion though.
 
don't hunt with it, but I went with a 300 AAC. Main reason, 8 years of "out of stock" on most components. When I started there was a real chance this would be a deer rifle,but the person lost interest in hunting. I chose the AAC over the X39 for weight mostly. the rifle weights 6.2LB empty, shoots a 110 Vmax at 2380FPS, so right up there with the 7.62x39, but I can reload ammo for 19c/round too.
 
Fine Figure of a Man said:
That's why I don't have or want one.
In Iowa, and several other states, deer hunting laws have made the 450 Bushmaster the popular choice, and a good one IMO.
If legal, I would prefer my 6.5 Grendel for deer.
Click to expand...

I expected that I was not going to like the AR10 just from handling a few of them but I built one anyway as I like to challenge my own prejudices. They are great in every way other than being too big and 3 lbs too heavy.
 
20190411_125240.jpg
someguy2800 said:
I expected that I was not going to like the AR10 just from handling a few of them but I built one anyway as I like to challenge my own prejudices. They are great in every way other than being too big and 3 lbs too heavy.
Click to expand...
Pretty much my feeling on the ar10 as well. That's why I built my 458 socom. I will probably build an AR 10 at some point, but as a dedicated long range rifle in 6.5 creedmoor or 7mm-08. The socom pair...
 
Last edited:
If I were interested in anything other than 223 I'd go with the 6.5 Grendel. But now that the military is looking hard at the 6.8's I might alter my decision. But for now the 223/5.56 rounds do what I need an AR to do. As others have said, I also have no interest in the AR10 platform. With those cartridges I'll shoot them out of a bolt gun.

And I don't see where anything larger than 6.5/6.8mm in a case that will fit in an AR15 does anything better than either of those. With the possible exception of some weird state laws.
 
alfsauve said:
So what's the latest on the .350 Legend?

Still waiting for barrels & brass.
Click to expand...
barrels are trickling out.
https://www.kakindustry.com/ar-15-parts/upper-parts/barrels/350-legend
https://www.cmmginc.com/product-category/barrels/350-legend-barrels/
https://craddockprecision.com/350-legend-ar15-barrels/

Lee's is making dies https://leeprecision.com/3-die-steel-350-legend.html

Mags are tricky. Cmmg are the only ones I know of right now https://www.cmmginc.com/product/magazine-ar15-350-legend-10rd/
Maybe you can modify a PMAG to work by filing out the internal ribs. But maybe not.

I was excited when this was announced, but a deeper dive made me much less enthused. it doesn't just use 223 brass, as it has a rebated rim. It doesn't use a standard mag. Bullet diameter is a little funky. I wish they has just copied the 357ar max and taken it mainstream like the blackout did with the whisper. Oh well.
 
Last edited:
I've got one 22lr, two 5.56, three 223 wilde, one 224 Valk, two 300 Blackouts and a 450 Bushmaster for 15s and I have a 308 and a 243 in AR10s.
Why, like Varmintterror said it's the US of frikin 'merica.
 
I hunt deer, pigs and coyotes with 5.56, 6.8 SPC, 6.5 Grendel, 458 SOCOM and have, but won’t in the future, hunted pigs and deer with 300 BLK. I’ve also got ARs in 308 and 6.5 Creedmoor. If I had to grab one tomorrow and go kill something it would be the 6.8 SPC. I think it is the best balance of weight, power and mag capacity.
 
The 300 blk dropped this pig like a bad habit.

D418FFAE-E510-4C85-9EBE-F9DDB766E44A.jpeg





If I could have hit a couple more we could have had a meal...:)

Was likely the best shot I have made to date on a running target.
 
I had a 6.8 SPC a while ago and used it to kill a few deer. It worked well, but I wound up selling it to get the next shiny thing and haven't messed with non-.223 AR-15s since. Lately I've really been enjoying my accurate .223 Wylde rifle and have been thinking about adding something with a bit better long range wind performance to the mix.

I've thought about picking up a 6.5 Grendel for a while, but recently the 6mm Grendel variants like the 6mm Predator, .243 LBC, etc have been catching my eye. If I could get 103gr/105gr bullets up to ~2,700 fps out of a reasonable barrel length (20"?), it seems like I might have a nice rifle for longer range steel that could do double duty as an antelope plunker. I am curious about Grendel mags though, as it seems from reading around that reliability can be hit or miss.
 
Last edited:
Im hoping the 277 wlv catches on, too. I really like the easy to make brass, that was probably my favorite part of the 300bo that I just sold. So far though, havent been able to bring myself to build an upper. Im probably making a bigger deal of it than I need to, but..... Oh, and die sets are expensive.
 
Varminterror said:
Can you elaborate a bit on this?
Click to expand...

IMHO the 6.5G has a bit less wind drift and you can get a bit more velocity out of a longer barrel from factory cartridges. Not a huge difference but it is a difference. You also get to use the cheap Wolf ammo.
 
If you want cheap wolf ammo shoot a 7.62x39...a reason of the Grendel never was to shoot cheap ammo.

IMO the Grendel variants are better than the Grendel itself. I'll take a 6.8 over the Grendel everytime because the quality of bullets suitable for the respective cartridges is better on the 6.8spc, when it comes to meduim game hunting.
 
SharpDog said:
IMHO the 6.5G has a bit less wind drift and you can get a bit more velocity out of a longer barrel from factory cartridges. Not a huge difference but it is a difference. You also get to use the cheap Wolf ammo.
Click to expand...

I wasn’t interested as much in generalisms, but rather wanting to understand @greyling22’s perspective on why the 6.8spc was only a 200-300yrd cartridge, while the 6.5 was sufficient for 400, or maybe equally why he holds such short expectation for both.
 
Status
Not open for further replies.

Similar threads

N
  • Locked
Anyone hunt deer or hogs with a 6.8mm Rem. SPC AR15 setup??
Replies
23
Views
4K
sixgunner455
S
brutus51
  • Locked
6.8 SPC 6.5 Grendal
2 3 4 5 6
Replies
139
Views
6K
Newtosavage
N
6
  • Locked
Can my AR15 and Remington Model 700 (LA) share an optic?
Replies
5
Views
388
648E
6
brutus51
  • Locked
Daniel Defense conondrum
Replies
1
Views
184
Obturation
Obturation
C
  • Locked
Is anyone else tired of the M4 and AR15?
2 3
Replies
55
Views
4K
Art Eatman
A
Back
Top