Explain the purpose of 450BM

Discussion in 'Big Bore Rifles' started by jmccracken1214, May 1, 2019.

  1. jmccracken1214

    jmccracken1214 I didn’t learn the first time

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    Ive known about the round for a good while but never gave it any thought... And here I sit for who knows why, watching videos about it.. in AR's and bolt guns... Cool round for sure.

    What is the purpose of this? I havent done math, but im betting factory ammo aint cheap and probably cant handload all that cheap either. I see it great for hunting, but does it really serve a purpose outside of that? Max effective range, is what? 250?
     
  2. CZfool68

    CZfool68 Int'l Man of Mystery Charter Member Supporting Member

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    Killing big critters? Fun to shoot? Isn’t that enough?
     
  3. Catfish

    Catfish E Pluribus Mendacium Supporting Member

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    From the wiki page:

    with an AR-15.
     
    Last edited: May 1, 2019
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  4. Infamous1

    Infamous1 Well-Known Member Supporting Member

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    Allows people in states with a "straightwall cartrige regulation" to use the AR platform.
     
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  5. BowWow

    BowWow Happy to be here

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    For a while there were a ton of new cartridges being created and wildcats being made official. It's an evolving process to make something bigger and better..... I think...…. the 450 Bushmaster one of the first 45 caliber heavy bullets that could be used in an AR, that was it's niche. Around the same time the 458 SoCom and the 50 Boewolf came around that would fill a similar role .

    In a bolt gun..... there are lots of other cartridges that will do the same thing, but given the size of the cartridge, it's easy to make it fit into bolt rifle action. Since it's factory cartridge, and a company can make it fit into a rifle, make some and see if they sell! It's impossible to know if a new cartridge will get popular or not, but you don't know until you try.

    Oh yeah...…. a 250 grain bullet at 2000 fps or so.... no more than 200 yards would be practical.
     
    Last edited: May 1, 2019
  6. B00ger

    B00ger Bull headed and opinionated but really loves you. Charter Member

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  7. Paladin1911

    Paladin1911 No Longer In Charge Benefactor Supporting Member

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    I had a 450BM and sold that sucker after shooting it 3 rounds. It kicked like a mule and was not what I wanted.
     
  8. jmccracken1214

    jmccracken1214 I didn’t learn the first time

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    Maybe I just need to get a 308 bolt gun and cut it down to 12” and put a can on it
     
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  9. Catfish

    Catfish E Pluribus Mendacium Supporting Member

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    Doesn't everybody?
     
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  10. jmccracken1214

    jmccracken1214 I didn’t learn the first time

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    Indeed
     
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  11. jmccracken1214

    jmccracken1214 I didn’t learn the first time

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    Better yet, I have a bunch of 300 blackout brass that may be a better choice
     
  12. jimmyjames8

    jimmyjames8 Well-Known Member Supporting Member

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    The people I know who have 450 and 458 AR's use them to hog hunt. After taking 3 soft point 270's to anchor my hog, they may be on to something.
     
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  13. Pink_Vapor

    Pink_Vapor “Not as funny as he thinks he is”, spouse Supporting Member

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    I wanted one. One problem is bullet choice, 45 cal bullets are of a pistol design. A 46 cal (like a 45-70 & 458 SOCOM) have bullets designed for higher velocity and penetration.
     
  14. BatteryOaksBilly

    BatteryOaksBilly A SHOOTER Benefactor Life Member Supporting Member

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    Nef-Handi Rifle in .357 mag. Shoot equal weight 38 Specials to the same velocities you will achieve in 12 inch .308. With a can sounds like PFFFTTT.
     
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  15. Tarowah

    Tarowah Everybody’s Honey....

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    Big bore ARs are simply put, a BUNCH of fun to shoot, I went with .458 Socom for my boomer and it puts a smile on the face of everyone that shoots it!

    IMO you really can’t go wrong with any of the big bore calibers, the 450BM, .50 Beowulf or .458 Socom all have advantages and disadvantages for one reason or another but all three cartridges will take everything from deer, pigs to large bears out to 200 yards with ease.

    You’re welcome to take my .458 Socom for a spin if you want to shoot a boomer before you build one.
     
  16. BigWaylon

    BigWaylon Head philatelist Staff Member Benefactor Charter Life Member

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    Maybe @jmccracken1214 can meet me at PHA to shoot my Beowulf, and @Tarowah can join us with the SOCOM. Just need to find a .450BM to join us. :D
     
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  17. jmccracken1214

    jmccracken1214 I didn’t learn the first time

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    Hell I might buy a 450 out of curiosity lol and bring it
     
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  18. Infamous1

    Infamous1 Well-Known Member Supporting Member

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    download (1).jpeg
     
  19. phideux

    phideux Member

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    After 3 270s I bet your problem ain't the bullet, it's where you are putting the bullet. I use a 62gr 5.56 out of a 7.5in barrel. Out of 10 that I shot, 9 of them were DRT the 10th was my fault, bullet didn't go where I wanted it to go, the follow up one did though.
     
  20. NCLivingBrit

    NCLivingBrit Well-Known Member

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    To sell stuff that people don't already have?
     
  21. Ikarus1

    Ikarus1 Avtomat Krishna-kov

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    to use bullets smaller and lighter than my .458 Socom does?
     
    Last edited: May 7, 2019
  22. Michael458

    Michael458 Active Member

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    You can get some extremely serious .45 handgun bullets today. That will do just as well as the .458s available at the velocities 45/70 and 458 Socom can run............ Take a look at the Raptors and Solids from CEB (Cutting Edge Bullets) and from North Fork there are some expanding CPS (Cup Point Solids).

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  23. Charlie

    Charlie Member

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    I have a 450 BM upper coming soon along with an updated Hornady loading manual and some Redding dies, I got some Starline cases from UPS today and have plenty of 452 jacketed bullets of various configurations. It should be interesting. I have not searched too much for loading data but did see some data that called for H110. I have some of that. What other powders would you folks suggest. The upper will probably go on a Rock River lower. Do I need to change spring or buffer to make it work well? I get the idea from several sources that the ones that came with the rifle will do fine. Also, where can I get magazines that hold more than 4 or 5 rounds? Can I just get new followers and use the bodies of some of the magazines I use for 223? And advice is appreciated.
     
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  24. Charlie

    Charlie Member

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    I took it out yesterday and shot about 30 rounds of factory and handloads. What a hoot. No glitches. I still have to fine tune my sight in settings and get the components I really want to use, but so far so good.
     
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  25. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

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    Beat me to it. Last time I was in Michigan I helped a couple buddies that most would call FUDDS build their first ARs using this caliber. Southern Michigan requires straight walled cartridges for deer.
     
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  26. BowWow

    BowWow Happy to be here

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    Help me out, what is the logic behind the straight wall cartridges for deer?
     
  27. BigWaylon

    BigWaylon Head philatelist Staff Member Benefactor Charter Life Member

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    I was curious as well, so did a search. Seems like it’s that way in quite a few places. Best explanation I could find was this:

    38E85193-2817-4FDC-BCDF-6DDB66A432E3.jpeg
     
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  28. Tim

    Tim I am....an enchanter. Staff Member Benefactor Charter Life Member

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    Growing up there it was always “pistol, shotgun or muzzleloader only” in Southern MI. It was also illegal to hunt from an elevated platform/stand.

    The “logic” was that in the more densely populated areas these were the safer options.

    Eventually, after I moved here, elevated platforms were allowed in the hopes that a downward trajectory would improve safety. And, improved opportunity to actually harvest game was meant to bring more hunters out.

    The “straight walled rifles” rule was intended to allow PCC weapons - .357, .44mag, etc. - with the intent of getting more hunters in the field after years of declining numbers.

    Then....folks got creative and made bigger and better straight walled cartridges. The beauty of a market meeting a demand.
     
    Last edited: Jun 8, 2019
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