300 blackout ar-15 yes or no

[jmorris]

I also see this comment from time to time and it is not a fair nor accurate assessment.

The post above the one you quoted my comment from, was comparing the 300 blk to the 30-30 and my comment was "closer to, about the same..." As a round that falls somewhere between the two. How is that either unfair or inaccurate?

 

[1stmarine]

The post above the one you quoted my comment from, was comparing the 300 blk to the 30-30 and my comment was "closer to, about the same..." As a round that falls somewhere between the two. How is that either unfair or inaccurate?

Hi Jmorris,
Not sure between what two calibers the whisper falls into. Could you explain this? .... Perhaps between the 30 carbine and the 7.62x39.
We already explained why the whisper ballistic and terminal performance should not be compared to the 30-30 in any shape or form and I attached some examples for folks to see in an earlier post.
I think they are pretty self explanatory but please read them and let me know if they need more explanation.

 

[jmorris]

You can read Varminterror's post directly above mine that shows why he thinks the 30-30 and 300 blk are not in the same ballpark.

If you don't feel the 300blk is closer to the 7.62x39 than the 30-30, maybe you should take it up with him...

FWIW I didn't even mention the 300 Whisper, 300 fireball or 300-221, just the last name on the same old song.

Also just noticed your initial reply was about 12 hours before the last one on a Saturday, the more I read your last one the less I can make sense of it as a response to mine.?

 

[1stmarine]

If you don't feel the 300blk is closer to the 7.62x39 than the 30-30, maybe you should take it up with him...

Hi,
If that is what we mean then 300blk is closer to the 7.62x39 than the 30-30, yes that is the case.
The x39 sits in the middle since the x39 can produce 150-200fps more than the blackout with same bullet grain.
The whisper/blackout (same thing) sits between the 30 carbine and the 7.62x39.
The case was designed for subsonic work so that is why in the supersonic world is not that fast (small case capacity).
I think our believes and feelings do not matter nor affect the facts. This is what it is. Simple ballistics and physics.

https://www.thehighroad.org/index.php?threads/300-blackout-ar-15-yes-or-no.826291/#post-10642756

https://www.thehighroad.org/index.php?threads/300-blackout-ar-15-yes-or-no.826291/#post-10642904

 

[CraigC]

Maybe I should have said, "should be used in the same capacity as a .30-30" meaning that it is decent for medium sized game and under at ranges up to 100 yards or so.

Except none of them but the subsonic .300BO are 100yd cartridges.

The 300 BA will kill stuff. It is a step DOWN from 223 in performance. The better modern 223 bullets will shoot all the way through most deer size game out to 200 ish yards and give good expansion. They will kill deer size game farther.

The 300 BA's problem is finding bullets that will work at the velocities it is shot. The heavier 200 gr bullets don't leave the muzzle with enough velocity to reliably expand. Much less expand at 50-100 yards If you want to trust basically a FMJ on deer that is what you get. The lighter sub 150 gr bullets are designed to expand rapidly for varmint hunting, not big game hunting. This is the major complaint with 223 when used with lightweight varmint bullets.

That leaves the mid weights around 150 gr that are designed to expand at 1800-2000 fps. They are in that zone for 100 yards at most before they slow to the point where you won't get expansion.

Except that we do have bullets that do very well at both subsonic and supersonic velocities.

IMHO, bigger is NEVER a step down. Especially when the mass is doubled.

 

[1stmarine]

Hi Craig,
What do you mean with the mass is doubled?

 

[CraigC]

55gr vs 110gr.

 

[1stmarine]

55gr vs 110gr.

Hi Craig ..Oh, I see

So according to this logic a 40 Cal. with a 180gr is a lot better and is even twice the grain of a 90gr 243 winchester! lol

And this 30 carbine with 110gr should be in the same bulk park as the whisper..

https://www.buffalobore.com/index.php?l=product_detail&p=418




Or maybe we are missing a little thing called speed? specially, speed at impact that plays a HUGE role in small and
medium bore calibers, you know, like some of the most popular ones and effective people hunt with. 243, 260, 7mm-08, 22-250, etc...

 

[CraigC]

You're taking my comments out of context. Read the comment I responded to and my response again.

No, I'm not leaving velocity out of the equation but it seems you are.