Home Forums Hunting & Shooting Hunter's Campfire So Who Likes 300 Blackout?

Who likes it, and why?

i think its a neat round for the AR platform.....in a bolt gun prolly makes more sence to just go with the 308 and download.....was hoping to have a 300BO up and running for killing pigs in April but doesnt look like its gonna happen....

*shrug*

45-70

nuff said

Agreed, makes a good deal of sense in the AR (I may build one). Due to the fact you can make 300 BA brass from 5.56/223 with relative ease, you don't need different mags etc as you do with 6.8. In a bolt or other gun it is superfluous. If you want a similar/better thing in a bolt I would download 308 to 300 savage levels.

Keep that up an you'll achieve curmudgeon status in no time....

That was for George... Seriously, though, I'd like to hear from anyone who's put it to use.

I got an Encore barrel for a steal from Bergara, haven't got it up and running yet but I'm going to play with it. If I really like it I might get me an upper for my AR and a can to go with it.

I've owned a couple, still have the Daniel Defense, which a few other members have shot at a gathering. The DD is quite accurate and reliable. The CMMG shot about like an AK

I got it as a house gun, in lieu of a pistol caliber carbine - more rounds onboard and shorter than a pump shotgun, plus easier on your ears, at least with the subsonic loads. Uses readily available 5.56 mags. You can either run it subsonic, or run it supersonic and approach the power of a 7.62x39.

Some general comments:

1. I know the old .300 Whisper gurus suggested 220gr target bullets were very effective, due to tumbling when they hit game. So far, I am unconvinced. Might have something to do with a wounded doe running onto the next ranch, a couple years ago. Sierra might actually know what they are talking about, when they say not to use Matchkings on game. Place your shots exactly, and watch the trajectory.

2. Mine have shot more accurately, loaded to magazine length, rather than the suggested OAL of 2.08". They ran 100%, too.

3. I'm going to try the Outlaw State bullets, which are a 220gr segmented jacket designed for subsonic Blackout loads, and are guaranteed to expand at subsonic speeds. Shown on the middle right:



I think it's an interesting caliber

*******

And KW, why aren't you attending the Hog Hunt next month?

I have five friends who love it. All of them just plink for now. When making brass from .223 we had case neck tension inconsistencies until we used a Lee crimp die. Reliability skyrocketed and the cost saving are enormous. Around here a twenty round box goes for $40.

Nope, sierra does NOT know what they are talking about with the SMK vs game. But thats not the issue here, expecting a 220 to open at those speeds won't happen. And tumbling is totally a combo of speed and twist. When a 55 fmj tumbles in a target out of a slow twist AR, it does a LOT of damage. You can imagine what a 220 would do, just have to make it so that it tumbles. 240 might be easier to get to do that.

I haven't anything yet, but have a can on the way. Will put an AR together but think that a bolt or encore barrel might be best for many situations, no action noise that way.

So I'll probably end up with 2 of them. Run pre fragmented bullets in either and life will be just fine.

What neck tension issues? What size bushing are you using that wont' give enough tension? I need to order some to play with I suspect after reading this.
LC brass or other?

The problem with using .223 is that the case body wall is not made to be a case neck, so you are not going to get the reliability you are looking for by cutting down 223 cases. Obviously they work but not how they are supposed to.

Interesting you never heard anything about Whisper rounds having that issue some 30 years or so ago?

a tumbling bullet can be quite effective....IIRC Aagaard used a military 303 Brit FMG load that was designed to tumble when hitting flesh.....was quite happy with its performance on critters up to zebra size(650lbs give or take)....so the theory is solid

Curmudgeon status in my early twenties, who could be so lucky?

^This.

If that's the one in Tennessee, it may be that I'm fearful they'll discover that I'm originally from Kentucky. You know how they get jealous of their natural-born superiors... If it's in East Texas, I know people there. They scare me... ;-)

300 savage is not subsonic. IMHO the ONLY use of the 300 whisper( now called blackout for some reason ) is for subsonic uses.

If I wanted a 300 savage, I'd buy one rather than download a case. Often we've had issues with accuracy when downloading, though I will say trying the blue dot theory one time so far to get a quieter round, it did work nicely. Just kinda seems weird to have a case that will hold 35 or 40 grains of powder, holding 12 or such... seems that variations in location of powder vs primer ignition would create some inconsistencies.

The sole purpose of .300BO is for subsonic/suppressor use. Sure AAC tried to sell people that it was useable at supersonic speeds but this was a marketing ploy intended for idiots.

If you don't have a Suppressor and don't have a need for subsonics, buying a .300BO is like buying a Yugo to add to your Ferrari collection.

The .300BO is not comparative to the 6.8spc or Grendel. It's not even on the same planet as those two rounds.

It is a niche round and it does a pretty good job within that niche, but it's not the only answer to the subsonic question.

It's just the most widely known answer because a silencer company, who wanted to sell more suppressors and who is owned by the same company as Remington, Bushmaster and DPMS and thus had the marketing and industry knowledge and wherewithal to market a round, specifically aimed it at suppressor use to sell more suppressors.