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Thread: Second thoughts about my 300BLK build

  1. #8
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    The question I've been asking lately, and haven't found an answer yet, is whether an expanding subsonic 9mm hollowpoint has better performance in soft targets than a non-expanding 300 BLK. I honestly don't know the answer or how to figure it out, but it's an interesting question.

  2. #9
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    How about a 12ga and some ear plugs? ;-)

    I think 45acp is just about the perfect choice for home defense (assuming you are staying INSIDE the house):

    It's got plenty of power
    It's much easier to keep safe (vs a long gun)
    Unless you having training, A pistol is easier to navigate through tight corners, etc.
    My glock21 holds 13rds - hard to imagine that isn't going to be enough for hom defense, but I keep a spare mag just in case.
    great COMMERCIAL self defense loads are available.

  3. #10
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    I was, and I'm still, very excited about 300BLK. But I haven't bought in yet. My primary use initially would have been for fun at the range, and based on that I built a 9mm suppressed SBR instead. I don't regret that at all, it's a *really* fun setup and relatively cheap to shoot.

    But, since I first heard about 300BLK I've been wondering the same thing Rob posted above. If you want to use it in an HD role with a subsonic round, is it any better or worse than the 9mm with quality expanding projectiles? I'd love to know the answer to that.

    As was already mentioned, if I were to use 300BLK for HD, even suppressed, I'd probably want to use a supersonic load until I know more about the subsonic performance. That said, I'm sure there's some info out there and I haven't been looking for a while. I know there are people using subsonic 300BLK for hunting with success. For now I'm still using a short barrelled 5.56 AR loaded with barrier blind ammo for HD.

  4. #11
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    There is currently no subsonic 300 BLK I would consider for HD. Even when there is reliably expanding 300 BLK subsonic it probably won't be optimal for HD.

    I see subsonic as useful for very limited MIL applications, varmints, and fun.

  5. #12
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    Quote Originally Posted by rob_s View Post
    The question I've been asking lately, and haven't found an answer yet, is whether an expanding subsonic 9mm hollowpoint has better performance in soft targets than a non-expanding 300 BLK. I honestly don't know the answer or how to figure it out, but it's an interesting question.
    Considering the over penetration issues, that should be pretty straight forward.
    Stick


    I have been asked to point out that I am Magpul's photographer. I have also done work for 95 or so manufacturers within the firearm community, my work has been used for web, catalog, banners, magazines, covers, etc. I have also shot work for the US Military where it has been used in training aids. I am prior service and a full time LEO.


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  6. #13
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    Thanks for all the replies- if I were going to go supersonic, I'd just use a suppressed AR. Cheaper ammunition, not much louder, and in terms of practicality, it's all there.

    The 300BLK round for me is novelty now. I'd still like to get one, but I wouldn't be shooting it very much unless I reloaded, because I just can't justify a mag dump on $.80 a round.

    I guess I'm going to build a suppressed 5.56 SBR and go with 147gr subsonic 9mm...
    Last edited by shaneinhisroom; 04-27-12 at 14:01.

  7. #14
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    I think your last post hit it. Use an AR shooting supersonic ammo. Less over penetration issues. 300 blackout seems like a lot for home defense. Subsonic 300 blackout will go through rail road ties. I wouldn't want to shoot it in the house, terminal performance not withstanding.

    I 3 loaded firearms in the house. an AR loaded with 5.56 suppressed, 9mm subsonic, and a 12 gauge. I am building a 300 blackout but i wouldn't use it in that role.
    Damien


    I really want to help you and I will listen to your questions, but my answer will be "get a 6920, a Glock 19, an Arsenal AK, and a Spyderco Delica. Then plant an Aimpoint tree and hope it grows".

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