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Thread: Any experience with 400 corbon?

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    Any experience with 400 corbon?

    I have a 1911 I'm debating changing over to 400 corbon, does anyone have any experience with this caliber or conversion?

    I have a few hundred pieces of small primer 45acp brass that I'll likely use for conversion if I go for it.

    Any input would be appreciated.

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    Just buy the 10mm, you don't have to form the brass. Aren't you forming enough calibers at this time?

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    I don't have the barrel yet, but I'm planning on getting one for my 1911 in the near future because free 45 acp brass is 1000 times easier to find than free 10mm brass. I know the 400 corbon has around 15% lower energy than what 10mm is capable of achieving, but 400 corbon does have a few advantages especially if you already own a 1911 because all you need to do is change the barrel and recoil spring. If you make 2 loads that have the same muzzle energy in both 10mm and 400 corbon the chamber pressure in the 400 corbon is 20% lower than 10mm which means the brass will last longer and there will be less wear on the gun. I'm not saying 10mm and 400 corbon are equal. I'm just saying if you download 10mm to 400 corbon muzzle energy the 400 corbon will have 20% lower pressure.

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    Senior Member SafetyJoe's Avatar
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    Here's an example with 178 grain hard cast lead 10mm and longshot powder in a 5 inch barrel getting 1204 fps. Notice the estimated chamber pressure is 31,732 psi
    81UYDkl8wnL._SL1500_.jpg

    Now compare that with this 178 grain hard cast lead 400 corbon and longshot powder in a 5 inch barrel getting 1205 fps. Notice the estimated chamber pressure is only 26,550 psi
    That's 16.37% lower pressure.
    9e4c3555c39d3c099834989e1a138d60_800x600.jpg
    Last edited by SafetyJoe; 12-17-2016 at 03:37 PM.

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    Or you can go with the 10mm and 9x25 Dillon and have 2 speedsters in one gun. You can also load the 40 Short and Wimpy to close to 400 Corbon specs.

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    I tried it...ONCE! I had a .400 Cor-Bon barrel for my Springfield Armory 1911A1 GI. I just never, never, could get that thing to load right. It had constant failures to feed. Now it may be that I just got a bad cheap barrel. But I DID have a gunsmith put it on. It would have multiple failures to feed, I would take it back to him, he would find nothing wrong. I would shoot it again and experience the same problems. .45 ACP brass was easily converted to .400, just necked it down. I finally gave it up as a bad job and sold the barrel and the dies to a different board member that thought he could fix the problem. He never posted me back he couldn't, so maybe he did get it to feed. Anyways I finally just bought a 10mm. I liked it so much I now own two others and a Mechtech CCU to make one of them a carbine.
    MechTech_zpsjrxvavah.jpg

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    I was originally trying to avoid getting another gun, but I know how that will end up going...

    And I'm only forming 2 calibers at present, 300aac and 6.5 Grendel. They're both pretty easy conversions.

    Maybe I'll just save up for the 44mag instead...

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    Now you are talking.

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    Quote Originally Posted by Happyguy View Post
    Now you are talking.
    Looking for a 2.5 to 3" for concealed carry

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    It's like I said, .400 Cor-Bon is really easy to convert, but my .45 just did not seem to like it.

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    I had a 3 inch model 29 and with full power loads it was something to behold.

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    Senior Member SafetyJoe's Avatar
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    Ruger is coming out with a 3 inch 44 special GP100 that looks good for carry.

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    Senior Member SafetyJoe's Avatar
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    Here's a link https://www.americanrifleman.org/art...cial-revolver/
    ruger_gp100.jpg

    They are also going to make an 8 shot Redhawk in 357 magnum. I wonder if the next step will be a 10 shot in 327 mag.
    Last edited by SafetyJoe; 12-19-2016 at 12:52 PM.

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    Quote Originally Posted by SafetyJoe View Post
    Ruger is coming out with a 3 inch 44 special GP100 that looks good for carry.
    I'm going to go full on for the magnum if I get one. As my father says, "if you're going to be a bear, be a grizzly"

    He also has a model 29 that shoots like a dream.

  15. #15
    Senior Member SafetyJoe's Avatar
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    Well, you can't go wrong with a model 29. It worked for Clint Eastwood.

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    I'm actually eyeballing a 4" Taurus tracker. They're about $630 from what I'm seeing. I have a couple months until profit sharing, time to start looking for 44mag components.

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    Looks like I just bought a 6" stainless Ruger Redhawk .44 mag from somebody on one of my numerous gunn message boards. If I likes the double action too much I might have to sell my stainless Ruger Superblackhawk.

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    Matt, are you going to need dies etc?

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    I'm not certain that I'm getting the 44 just yet. But the wind definitely looks like it's blowing that way

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    Thought I had a big pile of .44 mag cases, I don't. What I have a great big pile of is .44 Special cases. Oh well, I shoot them from the same pistols.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
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LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check