Breaking News* New AR15 .30 cal cartridge

[R.W.Dale]

Yes I said AR15 not ar10

appears to be similar to the 308wssm wildcat

http://outdoorlife.blogs.com/thegunshots/2008/10/first-look-30-r.html

http://outdoorlife.blogs.com/thegunshots/2008/10/30-remington-ar.html


If it pans out I'll likely own one of these uppers within a year

 

[JesseL]

I'd like to know how it performs with 150gr + bullets.

 

[R.W.Dale]

From the numbers given it looks as though it replicates 300Savage

 

[Loosedhorse]

Sounds like a .300 Whisper, very slightly changed.

 

[R.W.Dale]

the case head measures a huge .500

the 300fireball doesn't even outperform 7.62x39mm this new chambering is 400fps faster with the same 125g bullets

 

[JesseL]

They're going to need some seriously well made bolts if they won't want them breaking off lugs left and right.

A .5" case head makes for a lot of bolt thrust.

 

[Bartkowski]

I wonder how reliable it will be with a case that fat.

 

[JesseL]

Well, Olympic has been doing .223 and .243 WSSMs for a while now, so it's clearly feasible to some degree.

 

[R.W.Dale]

supposedly the wssm ar15's are even more reliable feeding than a bolt gun or .223 ar due to the fact that rounds are loaded and fed from the magazine in the same fashion as a single stack handgun such as the 1911

 

[Bartkowski]

supposedly the wssm ar15's are even more reliable feeding than a bolt gun or .223 ar due to the fact that rounds are loaded and fed from the magazine in the same fashion as a single stack handgun such as the 1911

That very well could be the case, but it doesn't seem like the fat cartridges would feed well. I only have experience with .223 in AR's so I wouldn't know, I just figured they would be less reliable.

 

[Z-Michigan]

They're going to need some seriously well made bolts if they won't want them breaking off lugs left and right.

A .5" case head makes for a lot of bolt thrust.

Yes, definitely.

A fat case can be fed reliably. Taper and feed geometry matters a lot.

With this being so wide I guess the magazines will be single stack or just barely staggered?

Couldn't find any more info either on Remington's website or a google search. Very curious to hear more.

Here's an idea - why not neck this down to 6.8mm? Then you could get all the performance, and maybe even a bit more, that Remington originally (and inaccurately!) claimed for the 6.8mm SPC (called the Remington SPC by Remington, not by almost anyone else). Maybe you could even launch the 130gr and heavier .270 bullets at attractive velocities.

Let's hope this isn't another one where Remington's original velocity #s end up being 300fps optimistic.

 

[R.W.Dale]

If unsuccessful I could envision this case being used for a full line of calibers for ar15's pretty much supplanting the larger and more expensive ar10's role in hunting.

It's about time someone introduced some truly useful rounds for the ar15 platform, for some time now we've had small cased, high cap friendly rounds that don't really offer any big increases in performance needed for taking game at range. Then on the other end we have some huge cased heavy recoiling big bore rounds that are great for short range work but don't cut it at long ranges.

It's about time someone combined the two into a useful middle ground

 

[gvnwst]

well, looks like we finally get a good .30 cartridge for the AR. how would the ballistics on this compare to a 6.5g upped to .30? basically7.62x39 IMP.

If unsuccessful I could envision this case being used for a full line of calibers for ar15's pretty much supplanting the larger and more expensive ar10's role in hunting.

don't you mean 'successful'

 

[JesseL]

don't you mean 'successful'

Nah, I think he meant it could turn out one of those cartridges that only finds success as the parent of others. .284 Winchester is a good example.

 

[ugaarguy]

It's about time someone introduced some truly useful rounds for the ar15 platform, for some time now we've had small cased, high cap friendly rounds that don't really offer any big increases in performance needed for taking game at range. Then on the other end we have some huge cased heavy recoiling big bore rounds that are great for short range work but don't cut it at long ranges.

It's about time someone combined the two into a useful middle ground

.30 AR is pushing a 125 gr. to 2800 FPS MV. Black Hills factory loaded 6.5 Grendel is pushing a 123 gr. SMK to 2475 from a 16" bbl. according to data here http://www.65grendel.com/faq.htm. I'd like to see what the .30 Remington AR case would do necked down to 6.5mm.

 

[onebigelf]

How is this an advantage over some of the big-bore AR rounds like the .450 Bushmaster or the .50 Beowolf?

John

 

[BlkHawk73]

*yakn* I'll stick with my time proven modls and cartridges. not zipped up by the latest whiz-bang super short ultra power magno load. Also not into the whole spray and pray (c'mon admit many do the quick repetitive shots while hunting method either. One well placed shot and all is good.
At least I know I won't get getting in line ahead of anyone for one of these.

 

[gvnwst]

How is this an advantage over some of the big-bore AR rounds like the .450 Bushmaster or the .50 Beowolf?

ever try to shoot a .50 beowulf 400yd?

I'd like to see what the .30 Remington AR case would do necked down to 6.5mm.

6.5 WSSM. from what i have heard, it beats the grendel, making about .260rem ballistics

 

[Jason_G]

This has "niche cartridge" written all over it, I think. Sounds interesting, but absolutely useless unless you own an AR. Many do, but probably not enough to make this a mainstream cartridge you can go pick up at Wally World.

I think reloaders will be the ones who will get the most use out of this if it comes to fruition.

I reserve the right to be wrong though

Jason

 

[m700m]

i would hate, at this time, to stock-up for future feeding of that baby.

 

[W.E.G.]

All I have to say is DPMS LR-308.

I'm not at all interested in yet another odd-ball cartridge shoe-horned into a receiver designed for .223.

 

[Dr. Tad Hussein Winslow]

And around and around we go - wheeeeeeeeeeeeeeeeeeee!!

What WEG said.

It's just so, so, milquetoast. A bit more than a .300 whisper, so you cannot suppress it, but a bit less than .30-30 win, or about the same. Bleh, meh, etc. Expensive mags with low capacity. I foresee an EPIC FAIL poster with the .30 Remington on it within 1 year. But maybe not - I like Remington, so I HOPE they succeed.

 

[Nolo]

People like to "steal" my ideas, so it seems...

http://nolo84.deviantart.com/art/308-Shillelagh-99988325
My cartridge's case is longer, but it's significantly slimmer...
I wonder what pressures they are operating at?
All my data is just rough estimates using reference cartridges, such as the .30 HRT (same bullet diameter and weight), 6.5 Grendel (same case) and 7.62x39mm.
The Shillelagh would operate at a rather hot 55,000 PSI, like the SPC and, (I imagine) the HRT.
Oh well. I guess it's a good thing to come up with the same stuff as name-brand manufacturers...
'Course, I did do it way before them:
http://nolo84.deviantart.com/art/308-PPC-59477452
Just look at the submission date for that concept: July 9, 2007

I don't know whether to be angry our proud...

 

[gvnwst]

I don't know whether to be angry our proud...

Laugh instead.

 

[Nolo]

Oh, I am...
Funny bit is, I abandoned pursuing the .308-PPC a while back, because I didn't think it'd make a good assault rifle cartridge.
I only picked it up again very recently because I realize what awesome short-range performance you could get out of it.