The 6.8 mm Remington SPC

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I agree with Tob... many many cartridges perform fine at 1000yards... including the 6.5 and .308

It is more about the shooters skills than the cartridge. The 6.8 was designed for close range.. for use by Special Forces.. they asked for it.. and tested it.

The 5.56 won't be replaced anytime soon, frankly because it doesn't really need to be.
 
I think 300 BLK will be the end of the 6.8. Blackout uses all the standard AR parts except a different barrel
 
Well I guess everyone has their opinion. I know that the .308 can go well over 500 yards, but it doesn't mean it should. You guys are saying that at 500 yards you would be able to accurately and consistently hit an insurgent with a .308? As far as the 6.8, whatever. I was just pointing out that they basically just copied the 7.62x39 and then tweaked it a little bit to fit on the AR platform. From what I understand, the curved magazines and "large taper" is what makes the AK platform so reliable. Also, I know that they switched to the AK-74 but which gun saw more combat, the AK-47 or the AK-74?
 
I think 300 BLK will be the end of the 6.8. Blackout uses all the standard AR parts except a different barrel
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No, it won't. The 300 bo is basically a rebadged 300 whisper or 300/221 fireball, I got rid of my 300 whisper and moved to 6.8 about 4 years ago. It had a rainbow trajectory and shorter range compared to the 6.8.

As for the 6.8 being a copy of the 7.62x39?
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As for the 6.8 being a copy of the 7.62x39?
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Umm ... did you even look at the charts up above and compare? Here, I'll do it for you:

7.62x39 - 123.5 gr (8.00 g) Full metal jacket (2,640 ft/s)

6.8 - 110-grain (7.1 g) Hornady BTHP OTM; 2,650 ft/s (810 m/s)

Hmm, those are like night and day! No similarity there at all! :rolleyes:

I'm not gunna fight with you guys, but if you don't see a similarity there then I can't help you.
 
The only 123 gr ammo MidwayUSA lists as 2640 fps is Prvi, and if you look at the reviews, it's actually shooting 2450 from a carbine, they probably transposed the 4 and 6, but let's give you the benefit of the doubt and say they can get to 2640 anyway :rolleyes:

The BC of a .308 round nose bullet is way low, typically between .12 and .2, which means it's going to lose energy insanely fast. It drops below 1000 ft-lbs at 175 yards, where the 6.8 drops below the same point at 325 yards, almost twice the range:

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Now let's compare bullet drop, Both are adjusted so the highest point is 3" above line of sight. At 300 yards, the 7.62 has twice the drop of the 6.8:

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Of course, you're going to complain that I didn't use your favorite bullet. FMJ is unethical for hunting, and even the Sierra SPT only has a BC of .277, which still can't compare the the 6.8
 
OP, you made a bold statement, and when proven wrong, you go all 5th grade on us and bail.

When comparing these two rounds one should remember that there was the origonal test done with the 1/10 twist 6.8 barrels and there is the new data with spec II chambered 1/11 twist 6.8 which greatly enhance the performance of the 6.8 spc.
 
Hey, you didn't use my favorite bullet so it doesn't count! :D

Nice comparison, I'll give you that. I'd say that the 7.62x39 is pretty good for being 70 years old. Back in WWII they weren't morons and figured hey, we have bolt action rifles for a reason, lets use them! I don't think the AK-47 was designed for 300 yard combat. Lets see if the AR is still around in 70 years and talk about it then.
 
OP, you made a bold statement, and when proven wrong, you go all 5th grade on us and bail.
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I'm sorry, when was I proven wrong? I said that the military copied a 70 year old design and made it fit into their AR mags. At 100 yards or closer(realistic combat distance) show me one thing that's better about the 6.8 SPC. They come out with a new caliber and you get all giddy like a school girl, spend $400 on an upper, and then pay 4x more for ammo just to punch holes in paper. Tell me how I'm the idiot lol.

I'm gunna end it here before a moderator does. The AR is cool, the AK is cool. The AK will always be more reliable, do more damage, and look cooler then the AR. The AR will always be more accurate and versatile, end of story. Ask any Vietnam vet which they would prefer and then talk to me.
 
You guys are saying that at 500 yards you would be able to accurately and consistently hit an insurgent with a .308?
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Last time I looked out back there were no insurgents.. but yes... I can accurately and consistently make hits at 500, 600, 700, 800, 900, and even 1000 yards with a .308.

I have done it... and military snipers do it much better, and they are generally issued a .308.

Marines use 5.56 to shoot 500m, like I said.. it is more the shooter than the caliber.

They aren't going to replace the 5.56 with anything larger because certain circumstances call for it... there's a reason they have designated marksman in the unit, along with squad weapons.

Yes the mountains of Afghanistan might be the one exception, but even still... you won't see a entire replacement of the 5.56... just some special units may be issued something larger.

Mother Russian herself realized the short comings of the 7.62x39.... however people still try to cling onto all the myth and legend.
 
Last time I looked out back there were no insurgents.. but yes... I can accurately and consistently make hits at 500, 600, 700, 800, 900, and even 1000 yards with a .308.
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Well I really call BS on that. Make a youtube video and I'll believe you. Without your rifle strapped to a rest, taking 10 minutes to adjust with your digital range finder(I used those in WWII, all the good snipers do) and waiting for your spotter take a dump, you can hit a moving target at 1000 yards. Okay ...
 
I said that the military copied a 70 year old design and made it fit into their AR mags.
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When you say "Copied" if you define "copied" as: Different cartridge, different caliber, different case, different bullet weight/ design, different performance, for use in a different type weapon, with a different magazine than ya, it is like an exact copy.

They are after all both rifle rounds.

OMG, it is like looking into a mirror. Notice how they are all brass :eek:

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that's nice...looks like a bad shot along the side of the deer that partially gutted it. It's not a through shot, that's obvious by the wound channel.

Now how about a shot on a little tougher skinned animal. Member from the 6.8 forum on hogs using the 120gr SSTs I used as an example.
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