Beowulf, Bushmaster, and SOCOM: 2023 Practical Discussion

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  • Squid556

    Expert
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    11   0   0
    Feb 26, 2022
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    Wabash Co.
    The three primary big bore AR15 cartridges have been with us for quite a few years now and I thought it would be interesting to compare the .450 Bushmaster, .458 SOCOM, and .50 Beowulf as of 2023.

    20230930_045749.jpg
    .450 Bush/ .458 SOCOM/.50 Beowulf

    Im going to compare similar ammunition offerings, ballistics, and availability. Comparing the rifles themselves seems almost null since these are primarily about AR15s and are going to be awfully similar. Instead I will just be looking at the amount of rifles available
    --------------------------------------
    I managed to find three similar loads to compare ballistics on. .....
    .50 Beowulf Alexander Arms
    - 300 gr ballistic tip
    - 1700 fps bringing 1925 ft/lb energy
    -$50 / box from Midway

    th-168866919.jpg

    .458 SOCOM Underwood Ammo
    - 300 gr ballistic tip
    - 1900 fps bringing 2404 ft/lb energy.
    - $55 / box from Midway

    th-1858101912.jpg

    .450 Bushmaster Hornady Black
    - 250 gr ballistic tip
    - 2200 fps bringing 2686 ft/lb energy.
    - $40 / box from Midway

    th-3146128008.jpg

    Something I noticed while trying to find 3 similar loads to compare was that 458 Socom had the most amount of variety for projectiles.

    Okay so how do these really compare downrange? Within 100 yards, from what I've seen, I don't think there is much difference in these cartridges. All of them are going to hit like a sledgehammer. Rubber hits the road when you take these cartridges to their max effective range which is about 200 yards. Using my Strelok app I plugged in the manufactuers information for a 200 yard shot on a hog, 10 mph wind, with 6 power Vortex dead hold BDC

    First is .50 Beowulf arriving with 964 ft/lb energy

    Screenshot_2023-09-30-03-42-16.png

    Second is the .458 SOCOM. It arrives with 1366 ft/lb energy

    Screenshot_2023-09-30-03-42-36.png

    Lastly, the .450 Bushmaster arriving with 1361 ft/lb energy.

    Screenshot_2023-09-30-03-43-00.png

    I was surprised to see how affected by wind the 50 was. Both 45 caliber cartridges seem fairly similar to me. You be the judge if these numbers mean anything to you for a 200 yard shot. Seems like most people I know using rifles like these are much closer range and would yield very little difference between each other.
    -------------------------------------------
    As far as availability and cost... I did some digging across various retailers online and here's what I found....

    - 50 Beowulf has middle of the road cost, hit/miss availability, least options for reloaders.

    - 458 SOCOM has perhaps best variety of bullet selection, poor availability, and the highest cost

    - 450 Bush has the lowest cost, best availability, not so much variety, and the unique option for reloaders to use low cost 45 ACP bullets

    Lastly, looking at RIFLES currently listed on Gunbroker....
    - 50 Beowulf approx 200
    - 458 SOCOM approx 30
    - 450 Bushmaster approx 800
    ---------------------------------------
    In summary, its safe to say that 450 Bush is easily the most popular, cheapest to shoot, and perhaps better performing. It also is the only one of the three to be found in bolt / break actions

    458 SOCOM seems to be without a doubt fading. It would seem its caught in between the two other rounds without enough attributes to draw the industry towards its future.

    The 50 Beowulf has surprised me in its growing popularity. Ammunition and rifles have become more common now by manufacturers side skirting the Beowulf trade mark by calling their rifles or ammo 12.7x42mm. It would seem the 50 has its own special draw despite its similarity to 450.... because hey, its a freakin 50!

    What's INGOs experiences and thoughts on the AR15s three big bore cartridges?
    :ingo:
     
    Last edited:

    Cavman

    Master
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    Mar 2, 2009
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    I have the 450 bushmaster. For main reasons ya said. I can go anywhere and buy the round. Plus didnt hurt the bushmaster upper was on a sale at a fantastic price
     

    ed1838

    Master
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    23   0   0
    Feb 20, 2022
    1,829
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    Seymour
    Have 450 like it. Then BCA had a Complete 12.7x42 [50 beowulf] rifle on sale. It runs great doubled checked everything and lubed it well. Was impressed how well it shot at 50 yards 3 rounds 1 large hole. I did not need it just wanted a 50 and could not pass for this price. No tax or shipping on the order and ffl didn't charge transfer. Picked up 200 rounds of 50 from classifieds here and another 200 from another site.
    BC-15 | 12.7x42 Rifle | 16” Parkerized Heavy Barrel | 1:20 Twist | Carbine Length Gas System | 15” MLOK | No MagazineCR645N-127CHB16120P.936-15M3$414.99
    • Ordered 1
    • Shipped 1
    $414.99
     

    dak109

    Expert
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    5   0   0
    Jun 26, 2009
    1,186
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    Brown County
    Had the SOCOM, biggest advantage for me was it used rifle bullets instead of pistol bullets. For my uses that made more sense. Loaded for it before data came out in the Lyman manual. My starting load was hotter than book maximum, but so accurate I didn’t go any higher.
    Took two deer with it. Had to throw away 3 front shoulders. Sent it down the road for something a little more meat friendly after Indiana went HP rifle.
    The 450 has definitely became the more mainstream caliber.
     

    edwea

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    27   0   0
    Jan 25, 2015
    1,305
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    New Dolan
    The 458 socom has the potential to load subsonics. Do the others? I'm surprised it didn't catch on more. I mean a suppressed subsonic 600 gr bullet out of a AR? Come on!
     

    DadSmith

    Grandmaster
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    1   0   0
    Oct 21, 2018
    22,795
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    Ripley County
    The three primary big bore AR15 cartridges have been with us for quite a few years now and I thought it would be interesting to compare the .450 Bushmaster, .458 SOCOM, and .50 Beowulf as of 2023.

    View attachment 302462
    .450 Bush/ .458 SOCOM/.50 Beowulf

    Im going to compare similar ammunition offerings, ballistics, and availability. Comparing the rifles themselves seems almost null since these are primarily about AR15s and are going to be awfully similar. Instead I will just be looking at the amount of rifles available
    --------------------------------------
    I managed to find three similar loads to compare ballistics on. .....
    .50 Beowulf Alexander Arms
    - 300 gr ballistic tip
    - 1700 fps bringing 1925 ft/lb energy
    -$50 / box from Midway

    View attachment 302463

    .458 SOCOM Underwood Ammo
    - 300 gr ballistic tip
    - 1900 fps bringing 2404 ft/lb energy.
    - $55 / box from Midway

    View attachment 302464

    .450 Bushmaster Hornady Black
    - 250 gr ballistic tip
    - 2200 fps bringing 2686 ft/lb energy.
    - $40 / box from Midway

    View attachment 302465

    Something I noticed while trying to find 3 similar loads to compare was that 458 Socom had the most amount of variety for projectiles.

    Okay so how do these really compare downrange? Within 100 yards, from what I've seen, I don't think there is much difference in these cartridges. All of them are going to hit like a sledgehammer. Rubber hits the road when you take these cartridges to their max effective range which is about 200 yards. Using my Strelok app I plugged in the manufactuers information for a 200 yard shot on a hog, 10 mph wind, with 6 power Vortex dead hold BDC

    First is .50 Beowulf arriving with 964 ft/lb energy

    View attachment 302488

    Second is the .458 SOCOM. It arrives with 1366 ft/lb energy

    View attachment 302489

    Lastly, the .450 Bushmaster arriving with 1361 ft/lb energy.

    View attachment 302490

    I was surprised to see how affected by wind the 50 was. Both 45 caliber cartridges seem fairly similar to me. You be the judge if these numbers mean anything to you for a 200 yard shot. Seems like most people I know using rifles like these are much closer range and would yield very little difference between each other.
    -------------------------------------------
    As far as availability and cost... I did some digging across various retailers online and here's what I found....

    - 50 Beowulf has middle of the road cost, hit/miss availability, least options for reloaders.

    - 458 SOCOM has perhaps best variety of bullet selection, poor availability, and the highest cost

    - 450 Bush has the lowest cost, best availability, not so much variety, and the unique option for reloaders to use low cost 45 ACP bullets

    Lastly, looking at RIFLES currently listed on Gunbroker....
    - 50 Beowulf approx 200
    - 458 SOCOM approx 30
    - 450 Bushmaster approx 800
    ---------------------------------------
    In summary, its safe to say that 450 Bush is easily the most popular, cheapest to shoot, and perhaps better performing. It also is the only one of the three to be found in bolt / break actions

    458 SOCOM seems to be without a doubt fading. It would seem its caught in between the two other rounds without enough attributes to draw the industry towards its future.

    The 50 Beowulf has surprised me in its growing popularity. Ammunition and rifles have become more common now by manufacturers side skirting the Beowulf trade mark by calling their rifles or ammo 12.7x42mm. It would seem the 50 has its own special draw despite its similarity to 450.... because hey, its a freakin 50!

    What's INGOs experiences and thoughts on the AR15s three big bore cartridges?
    :ingo:
    If i was to build one it will be the 450 Bushmaster. I've already did my research on what big bore AR I wanted and the 450 Bushmaster is just best all around for reasons you pointed out here.
     

    Squid556

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    Feb 26, 2022
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    Wabash Co.
    The 458 socom has the potential to load subsonics. Do the others? I'm surprised it didn't catch on more. I mean a suppressed subsonic 600 gr bullet out of a AR? Come on!
    If you roll your own they all can be subsonic. Far as factory options goes I have only seen subsonic offerings for 450 and 458…. Not 50.
    IMG_4498.jpeg
    Lower picture is 458 socom. This black butterfly company seems to have several subsonic socom loads.
    IMG_4500.jpeg
     

    Noble Sniper

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    132   0   0
    Feb 22, 2010
    1,926
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    Anderson, Indiana
    Enjoyed your post!! Very well put together and I believe you’re spot on in your summary. I am suprised no one has snagged that Big Horn Armory 500 auto max for sale in the classifieds. That is a SMOKIN deal on a 50 cal AR based platform!!
     

    55fairlane

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    Jan 15, 2016
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    New Haven
    These 3 cartridges are only 200 yard loads......if I'm gonna spend the money why not get something that can go the distance?? Coupled with factory ammo is just expensive.....why I ask , why would you want one of these?
     

    edwea

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    Jan 25, 2015
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    New Dolan
    These 3 cartridges are only 200 yard loads......if I'm gonna spend the money why not get something that can go the distance?? Coupled with factory ammo is just expensive.....why I ask , why would you want one of these?
    A lot of people don't shoot farther than this. 90% of my shooting happens in the woods. My range (if you could call it that) is in a holler in the woods behind my house. Where I hunt, it is woods. Shooting no more than 200 yards with a gun doesn't make for any less of a shooter or make it less fun. :twocents:
     

    DadSmith

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    Oct 21, 2018
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    A lot of people don't shoot farther than this. 90% of my shooting happens in the woods. My range (if you could call it that) is in a holler in the woods behind my house. Where I hunt, it is woods. Shooting no more than 200 yards with a gun doesn't make for any less of a shooter or make it less fun. :twocents:
    In my hunting area 50yds is tough to do. I have two small areas about 5ft wide I can reach out to 75yds maximum. However, I've never seen any deer there. They are usually 30-45yds maximum from me.

    My blind sits where 3-4 deer trails come together for about 40 yards then they separate into two trails. I'm right where I can see both as they are coming or going.
     

    dak109

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    I often have to remind myself of the vast difference in topography here in Indiana as well. Wide open flat spaces up north. Very hilly and wooded down here in the southern half. That has a bearing on ones chosen tool as well.
     

    Bstarkey_46947

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    Jan 11, 2021
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    Indiana
    450 Bushmaster on the AR platform is route I took when they legalized straight wall calibers for deer hunting. I put Ross Schuler muzzle brake on it and boy does it make it loud w/out hearing protection on.
     

    Squid556

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    Feb 26, 2022
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    Wabash Co.
    If we really want to split hairs here all three were developed for three different roles. We tend to only look at them for the purposes we would be using them for.

    From what I've read so far...
    -50 Beowulf was primarily designed to stop cars.

    -458 SOCOM was designed for anti personnel military applications (laughable but that's another story)

    -450 Bushmaster seems to be the only cartridge of the three designed mostly for hunting.
     

    Tombs

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    Martinsville
    450 bushmaster is going to win out in almost every instance. It has more energy on tap the the others, sometimes significantly so.

    I don't really see a use case where 450 wouldn't trump the rest, except for very heavy subsonics where the 458 will come into its own.

    One thing I can say from experience is that the 450 will go through considerably more steel than either the 458 or 50. It's also pretty cheap to reload for since it uses .452" rather than .458".
     

    rb288

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    I load Hornady 395gr Sub-X bullets to 1050fps in my 16" 450BM AR.
    They are consistently accurate to 1.5 moa at 75 yds and very quiet when suppressed.
     
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