I like the 15 round ASC mags. Never had an issue and you can load them to 2.3 if that is important to you.

This is what I've heard as well.

C products defense and ASC have become a reliable 6.8 mag. I've heard of some having to tweak a little on the feed lips but other than that they are decent mags.

ASC. I have several in 5 round and up and have never had a malfunction with any of them.

Gunmagwarehouse usually has the best price on them

Could you elaborate? Ive done a little hunting with a 5.56, but I've kind of been eyeing an SBR in something with maybe a suppressor down the road. The 6.8 seemed like better hunting round than say 300BO. . . . The 6.5Grendal seems to have less market share.

I'm a big 6.8 fan, but if you're thinking suppressed SBR, .300 BO is the obvious choice. That is literally what the round is made for.

Only subsonic. For hunting (supersonic), even with a suppressor, the 6.8 still wins.

Love my sbr 6.8 12.5" barrel! I had novske barreled 8.5" blackout and gave my father my 16" blackout with wilson barrel. Im getting 2540 with a 120 sst out of a 12.5" arp barrel. That equates to almost 50% more energy then the 16" 300 blackout at 300 yards using the 110 barnes. That puts that little pill with a smidge over 1k lbs at 300 yards, almost same a .243 factory loads. I had three of the asc or c productsmagazines i cant for the life of me remember which one it was, but they would not feed worth a dam! I know quite a few had good reliabilty with them but not me. Bought a couple pri waffle mags and never had anymore trouble!

What powder? AA2200?

I've got a 12.5 ARP waiting on me when I get home and I wouldn't mind using AA2200, but I'd prefer to use a more temp-stable powder like H322 for hunting, even if it's just a wee bit slower.

Factory Hornady 120 SST runs 2410 FPS out of an ARP 12.5".

H335 is the powder i use! I could get more velocity, but accuracy is great. i did a bunch of reading on 6.8 forums before trying to pick a powder for the 6.8. Found out this powder was one of several that H with ARP barrels liked so bit the bullet!

Hmm. I have a bit of h335.

I really have only plans for supersonic for hunting.

For subsonic, I'd be tempted to get a 9mm can.

I am aware, but anyone with a can really should be shooting subs. Also, I assume your chart represents a 16" bbl. the .300 BO is more efficient than the 6.8 (though the 6.8 is no slouch), so the gap closes significantly when shooting out of an SBR length barrel. Cans are also rated for much shorter barrels in .300 than 6.8, so you can get a shorter OAL with a .300 barrel, which is the whole point of paying for an SBR stamp. I have 3 6.8s and love the caliber, so I'm not just a hater or .300 fanboy. There really is no contest between the 6.8 and .300 BO if you're shooting suppressed with an SBR, and I don't really think it's even debatable.

1. .300 produces more energy on target when limited to shooting subs (which makes the suppressor actually worth while)

2. .300 is a more efficient cartridge and better suited for SBRs.

3. Most cans are not rated for short 6.8 barrels, many require a minimum length of 16" for the 6.8 (look it up if you don't believe me.)

4. Many cans are rates for 10" or even 8" .300 BO barrels, which gives you better bang for $200 bucks you paid for an SBR stamp.

Last thing...if you think you can't or shouldn't hunt with subs, which you implied in your post, you are woefully misinformed.

Have you tried the (relatively) new Alliant 1200-R? If not, you should. Best 6.8 powder I have found.

1. That's what I said. 300BO works better subsonic. But you should read up on the 6.8 (which is what this thread's about, not the 300BO). But the 6.8 shines in SBRs too. The BO doesn't own that corner.

2. Based on what?

3. My Saker 7.62 (one of the most popular suppressors on the market today) is rated for .308 down to 12". And there are other cans with similar ratings (Specwar, etc). But let's use some logic here: if a can is rated for an 8 or 10" BO barrel, but only a 16" 6.8 barrel, what does that tell you?

4. Another opinion. How do you know how I value my stamp?

Last thing - That really isn't what I meant or tried to insinuate, but since you went there, why would you want to shoot anything larger than a house cat with a projectile traveling slower than 1125 fps (the speed of sound)? It must be that clean, ethical harvest you're looking for? But my opinion IS that you shouldn't hunt anything larger than varmints with subsonic ammo. But I know. I'm woefully misinformed, so take that for what it's worth.

Got to shoot it a bit more this weekend. Again, this is factory Federal Fusion MSR 6.8 SPC, 115gr. I'm not the greatest shot in the world but this gun is deadly. This picture shows a 5 shot 100 yard group shot in under a minute. Rock River LAR-15 lower, Coyote Carbine upper 16" 1-10 twist, Silencerco Omega suppressor, Burris 3-9x40 Fullfield E1 with illuminated ballistic plex reticle. I used CProducts 10 and 25 round mags this weekend; this group is the first 5 out of a 25.



I was fortunate to use it for an MLD doe hunt this weekend. 1 DRT, 2 died in 20 yards, longest one ran 65 yards. I *think* I got a pass-thru on each deer.

Kry226, you are a perfect example of the 6.8 fanboy that gives the cartridge a negative connotation. I am sorry that you don't know what it means for a cartridge to be efficient, and that much of what I said went over your head. I find it ironic that you were the one to tell me to go lookup info on the 6.8 when you are so clearly misinformed, or choosing to view data with an extreme amount of bias.

If you would like to PM me, I will gladly go into detail and explain each point I made.

Last thing - That house cat comment is truly laughable. With your logic, I guess our Marines should throw away all of those useless 1911s. No way that .45 going 900 FPS could kill a thing! And before you say the whole handgun vs rifle thing, please note that subsonic .300 BO rounds will still produce more energy at 200 yards than the standard .45 load does at the muzzle. I hope this demonstrates to you how flawed your logic is.

The main problem with the with the sub sonic 300 BLK is the lack of affordable bullets that will reliably expand at sub-sonic velocities, As soon as they get expanding projectile costs to around 30-35cents a piece I will build a 300 Blk

I agree with most of your points to some extent, but I also agree that you shouldn't be hunting deer with a 500 fpe cartridge.

There is big difference between shooting a person in combat and killing an animal in a single shot for a humane kill.

When I was was building an AR I had similar questions between both rounds. I will own a 300BO in the future but I don't yet.

A couple of questions to consider.

How easy is it to get ammo? I don't reload. 300 BO is showing up a lot more than it did when I built mine. Locally I can get Hornady 120SSTs at academy whenever I want them. 300 is hit and miss. So on ammo the 6.8 won for me.

What are you doing with it? shooting paper or animals. I like everything in regards to the 6.8 better for hunting. Go watch alot videos on youtube of hog hunting. You will see the trend of hogs going down vs not for yourself. No stats, graphs or random thoughts necessary. go see for yourself. Sure one or 2 videos could prove terrible shots. Also, if your intention is hog hunting go look under the Hog hunting tab and look for posts. TEXASLAWMAN has paved the way for the 6.8 on this site. If a 300BO was better don't you think he would shoot it in the 100s of videos he does?

300BO wins hands down on subsonic suppressed. Hence why its on the list. But I dont have a suppressor yet. When I do that's when I will add a SBR to the family.

Random thoughts:
Sure one could argue a .308 is better suited for all. But I can't shoot a 308 out of an AR15. So that's a not going to happen for me anytime soon either.
6.5 grendel is nice as well, but ammo is hard for me to come by. So I ruled it out also.

So you agree with me. If you read my posts in their entirety, you will see that I said that the 6.8 is the more versatile all around caliber, and that I own/have owned several different 6.8s. You are jumping to the defend positives of the 6.8 that I didn't even mention. I am intimately aware of the 6.8 ballistics and performance on medium sized game, as I have killed many a pig with the round, reload it regularly, and have studied the numbers for hours.

My oringinal post was in repose to Chris42 saying "...I've kind of been eyeing an SBR in something with maybe a suppressor down the road. The 6.8 seemed like better hunting round than say 300BO..."

Based on your statement above, you agree with my response "I'm a big 6.8 fan, but if you're thinking suppressed SBR, .300 BO is the obvious choice. That is literally what the round is made for."

Kry226 then said "Only subsonic. For hunting (supersonic), even with a suppressor, the 6.8 still wins." That lead to my post in which I pointed out the advantages of a .300 BO when shooting a suppressed SBR.

I completely agree that out of an unsuppressed gun, or a 16" barrel the 6.8 outperforms the .300 by a longshot. I never said that wasn't the case, and that is not what Chris42 said he was looking for. I was simply recommending the .300 BO to a guy that is thinking about building an SBR and getting a can down the road.

I don't get this statement. A suppressor is designed to make the rifle hearing safe. Subs are already darn close to it so to me a suppressor serves a better purpose on supersonic rounds.


What barrel length are you talking about here because a SBR is anything less than 16". The 6.8 is very effective at the 12.5" range and higher. I run a 12.5" 6.8 with the Hornady 120gr SST's and it's pushing them at 2410fps and 1547 ft/lbs at the muzzle. What are the numbers on the same setup out of the 300BO?


Do I hunt with subs? No. Can you? Yes. Is it the best tool for the job? No.

What in Hades are you talking about? Look dude, don't get offended if not everyone shares your enthusiasm for the BO, but I appreciate the insults. But facts are facts and ballistics don't lie. At supersonic speeds, the 6.8 is superior in speed, trajectory, and energy. Which is all I said. Calling me a fan boy? Ha, that's what's really laughable. Pot, meet kettle.

I guess you also know that the 6.8 was designed for an SBR as well, and with performance that is optimized for reaching near-max velocities in very short barrels too (i.e. 12.5")? Efficiency, no?

But I couldn't care less what you hunt with or how fast your bullets are traveling. It's your gun, your deer (or hog), and your tracking job. Drive on. Run what you brung.

But I do still stand by my opinion that hunting deer and hogs with subsonic rounds is a bad idea. I've seen too many bullets recovered from animals shot with full powered .308 and .30-06 rounds (at close ranges, mind you) to ever think it's a good idea to shoot an animal at subsonic speeds. Expansion is already tough enough to ensure at full powered rifle speeds. Why would you put yourself at an even greater disadvantage? I suspect I would not be in the minority in that opinion. Can it be done? Of course. Should it be done? Nope.

And by the way, the Marines I'm currently serving with in Afghanistan are carrying M9s in 9mm.

Thanks for your service, Kry. Sorry you are stuck with one of the old M9s and didn't get issued the new Colt 1911s they contracted.

We are clearly not speaking the same language here and are going in circles, so no point in continuing the conversation.