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BFR 45-70 or .450 Marlin

Discussion in 'Handguns: Revolvers' started by Beyond_Perfection, Dec 20, 2010.

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  1. Beyond_Perfection

    Beyond_Perfection Member

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    I am having some trouble finding real world ballistics for these rounds in these revolvers. :banghead:
    Most of what I find is from a friend of a friend or "Recoil tears your arms off" I know it will not recoil bad at all as my .500 and .460 are very manageable.

    I know they are not going to touch my .460 S&W for speed but what can I expect?

    I may order it with both cylinders as it is very reasonable to add that option at time of order.
     
  2. ArchAngelCD

    ArchAngelCD Member

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    The 450 Marlin round will be much more stout than the 45-70 in a handgun, even a very heavy handgun like the BFR. If you reload you can make the ammo to suit your needs so either would be fine. If you are buying ammo I would probably go with the 45-70 because it's more available and the price is somewhat less.
     
  3. Harley Quinn

    Harley Quinn Member

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    BFR is the only one in 450...

    http://www.magnumresearch.com/bfr_fact.asp

    According to makers of BFR
    More on it...

    http://www.sksboards.com/smf/index.php?topic=12984.0;wap2
    Ballistics about all I can do is show stats, never fired it only read about it:)
    http://www.cpcartridge.com/450marlin-B.htm
     
  4. BrocLuno

    BrocLuno Member

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    I like it, but I'd vote for the 45-70 too :)
     
  5. Cosmoline

    Cosmoline Member

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    I've shot both these rounds a lot out of leverguns, and the .45-70 out of a BFR. I'd also say go with the .45-70. The .45-70 is really three different cartridges in one. You have cowboy loads which are cast bullets and BP or smokeless at very low pressure. These are the ones certified OK for trapdoor Springfields in the load manuals. Then you have your SAAMI spec hunting rounds which are standard factory production. Then beyond that you have what are really .45-70 +P or .45-70 magnums put out by Garrett, B-Bore and as handloads. Each category is really a different cartridge, esp. on the recoil end. With the BFR you can should be able to comfortably shoot both cowboy loads and the standard factory loads. I think you'll be surprised how nicely the big revolver rolls.

    The .450 Marlin, OTOH, has standard loads in the range of the .45-70 +p. You can download it of course. But anything you buy over the counter is liable to want to take your wrist off out of a revolver. IMHO it would really shine in a compact bolt action brush gun, but nobody listens to me ;-)
     
  6. Beyond_Perfection

    Beyond_Perfection Member

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    What I am looking for is real world fps from 10 inch BFR
     
  7. Molasses

    Molasses Member

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    10" .45-70 BFR. I ran factory ammo from "the big 3" ammo makers over a chrono a few years ago and was underwhelmed. IIRC, the 300gr JHPs ran in the neighborhood of 1,200-1,300FPS and the 405gr JSP was around (under?) 1,100FPS.

    Magnum Research has their claimed velocity figures for the different BFR chamberings in their FAQ section, about 2/3 of the way down the page. http://www.magnumresearch.com/FAQ_BFRRevolver.asp
     
  8. Harley Quinn

    Harley Quinn Member

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    What I have found is...

    Many Ammo makers put the velocity on the box of ammo, it is information based on their findings...;)

    Then we have others that set up and shoot reloads and have their results...

    Good place to start is with the Ammo manufactures imho :D

    This is from the MRI page

    BFR .450 Marlin, 10-Inch
    4.5 lbs.
    350-gr. Bullet
    1814 FPS
    109.04 Recoil Factor

    BFR .45/70, 7.5-Inch
    4.4 lbs.
    300-gr. Bullet
    1472 FPS
    74.1 Recoil Factor

    BFR .480, 7.5-Inch
    3.75 lbs.
    325-gr. Bullet
    1409 FPS
    81.44 Recoil Factor

    Redhawk .480, 7.5-Inch
    3.3 lbs.
    325-gr. Bullet
    1409 FPS
    92.55 Recoil Factor

    Redhawk .454, 7.5-Inch
    3.3 lbs.
    300-gr. Bullet
    1600 FPS
    115.15 Recoil Factor

    Freedom Arms .454, 7.5-Inch
    3.25 lbs.
    300-gr. Bullet
    1600 FPS
    116.92 Recoil Factor

    Super Blackhawk .44, 8-Inch
    2.9 lbs.
    240-gr. Bullet
    1400 FPS
    98.96 Recoil Factor

    They have even gone and given you a "real" recoil factor :D In their opinion:what:

     
  9. Prosser

    Prosser Member

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    You sure that recoil factor is right?

    I just ran it for my Maximum: what am I doing wrong?
    Bullet weight 525 velocity 1350 fps add together:=1875 times 1350=2531250
    Gunweight 3.6 pounds, time 80= 288 divide into 2531250=87.8906 Recoil factor???:what:

    My point, perhaps, is that their recoil factor may NOT be a real good way
    to figure this stuff.

    On the otherhand, the above load does recoil harder then anything I've ever shot, and, makes heavy .475 Linebaugh stuff feel like 9MM.

    I just decided to run my FA 83 with 420's at 1350 fps. It works out to 93.33

    Somehow the decimal place is moved in their calculations. Got it.
     
    Last edited: Dec 25, 2010
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