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Author Topic: For the 10mm cognoscenti...  (Read 9654 times)

RMc

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For the 10mm cognoscenti...
« on: June 24, 2018, 01:44:41 am »
...a really good handloading article on your favored caliber:

 https://www.riflemagazine.com/magazine/PDF/HL314%20Partial.pdf
Alabama

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    ksuguy

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    Re: For the 10mm cognoscenti...
    « Reply #1 on: June 24, 2018, 01:55:34 am »
    Interesting.   I'm kind of wondering what kind of performance levels I could load the 10mm to with my new Super Redhawk.  I'm guessing it could handle some pretty hot stuff since it's a really heavy gun designed to handle calibers up to .454 Casull.   
    Kansas

    Mikee5star

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    Re: For the 10mm cognoscenti...
    « Reply #2 on: June 24, 2018, 08:05:21 pm »
    Ironically they used one of the weakest 10mm pistols for the test gun.  One of the reasons I have heard for the watering down of the factory 10mm loads was that the Delta could not handle a steady diet of full power loads with out the frame cracking, and other safety issues.

    Somebody, I think Hornaday used to make a 220gr fmj 10mm projectile, would have been interested to see some load data for that weight projectile. 

    All that load data is conservative and fairly light.  Somewhere I have a thumb drive with some hotter data from John Taffin.  When I found it on the webs I copied it and saved it on a drive so that I would always have it.  But now I have miss placed the drive.

    But the list of manufacturers making guns for the 10mm is so much larger than just a few years ago. :clap  And they did not list any of the carbine manufacturers.

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    sqlbullet

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    Re: For the 10mm cognoscenti...
    « Reply #3 on: June 25, 2018, 11:09:33 am »
    One of the reasons I have heard for the watering down of the factory 10mm loads was that the Delta could not handle a steady diet of full power loads with out the frame cracking, and other safety issues.

    You hear this.  It is not accurate.

    It is true that you will see smiles from a Delta Elite in over-max loads sooner than you will see them in ramped barrels.  But only in over-max loads.

    It is also true that 1911 frames crack in the rail above the slide stop lever notch.  This is true in all high round count 1911's, it just happens much sooner in 10mm guns. The crack doesn't effect function. Colt's solution was to just remove the section of rail where the crack occurs. 

    But the FUD on the internets is the universe will end if you shoot loads in your Colt DE that are above 40 S&W loads.
    Utah

    coelacanth

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    Re: For the 10mm cognoscenti...
    « Reply #4 on: June 25, 2018, 04:19:36 pm »
    Yup.  Lots of folks get preachy about stuff on the interwebs - particularly handloads for your favorite firearm. :facepalm  I have seen no problems with any of my 1911 frames ( aluminum alloy, carbon steel or stainless steel ) after hundreds and in some cases thousands of rounds of standard pressure ammunition.  Most frames have a safety factor engineered into them from the start.  People have run .45+P, .45 Super and .460 Rowland on stock pistol frames for many years so unless you're loading up your 10mm to something over stock pressure it should not present any problems at all. 
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    RMc

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    Re: For the 10mm cognoscenti...
    « Reply #5 on: June 25, 2018, 09:06:10 pm »
    It has been quite a few years since I had the opporturnity to fire a  Dornaus & Dixon Bren 10 with original 200 grain Norma ammo.  That first encounter was indeed impressive - particularly the velocity at which the empty brass was ejected!  That was a hot load!

    That said, Brian Pierce made it clear in the article under discussion, that for a number of well explained reasons,  he decided to limit the data to 30,000 psi. Nonetheless, a number of loads in the 180 and 200 grain range pushed some 1200 and 1100 fps respectively at that pressure level. 
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    sqlbullet

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    Re: For the 10mm cognoscenti...
    « Reply #6 on: June 25, 2018, 10:12:00 pm »
    It has been quite a few years since I had the opporturnity to fire a  Dornaus & Dixon Bren 10 with original 200 grain Norma ammo.  That first encounter was indeed impressive - particularly the velocity at which the empty brass was ejected!  That was a hot load!

    That said, Brian Pierce made it clear in the article under discussion, that for a number of well explained reasons,  he decided to limit the data to 30,000 psi. Nonetheless, a number of loads in the 180 and 200 grain range pushed some 1200 and 1100 fps respectively at that pressure level.

    Having several 10mm pistols, I can attest that brass ejection is still "energetic" at a minimum.  25' or more is a very common distance.

    Brian was very politically correct in his statements.  Personally in find that few pistols ever came from the factory with inadequate support.  But I have owned more than one used 10mm that had been "bubba'd" to "improve the feedin'" and was no longer truly safe with full power ammo.  This was true of my P16-40, and I am still more conservative in the loads I will run in that gun even though it nominally has a ramped "fully supported" barrel.

    And, yes, with powders like Longshot, 800X, AA#9 and Power Pistol you can get pretty amazing performance.
    Utah

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