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Thread: Glock 20, 10mm Auto

  1. #1
    Boolit Master
    Join Date
    Feb 2014
    Location
    Germany
    Posts
    597

    Glock 20, 10mm Auto

    Hey guys,
    probably Iīm to dumb to use the search function, but I couldnīt find anything about this topic inhere.

    Iīm about to get me a Glock 20 for a hunting back up pistol.
    I know about the polygon-Glock-barrel-thing, but didnīt know earlier when I had my Glock 17 and she didnīt really care about.

    So, does anybody have experience with cast loads for the Glock 20?

    If so, please teach me about it.


    Best regards,
    Jay
    "In lead we trust!"

  2. #2
    Boolit Master
    Join Date
    Oct 2009
    Location
    Tennessee
    Posts
    2,390
    I shoot cast in my Glock M20, M29, M21, M30, M27. All with stock Glock barrels and all Gen4.
    Have at it.
    We Know Mass Cannot Be Weighed But It Has Newtonian Weight And That Is Derived From Kilograms And Kilograms Can Be Converted to Pounds. But, Still Mass Cannot Be Weighed. But How is the kilograms obtained? Can Kilograms Be Weighed? Evidentally Yes It Can. But, Still Mass Cannot Be Weighed So Kilograms Must Not Exist. Funny Isn't It.
    One good thing out of this the next time I'm at the doctors and they want to weigh me I'll tell them mass cannot be weighed.

  3. #3
    Boolit Master
    Join Date
    Feb 2014
    Location
    Germany
    Posts
    597
    Are there some bells and whistles to it?

    Oversize .001"+ of course, but do you use a GC or are they coated or something?

    What bullet weight and speed do you shoot them in the M20?

    I have a Lyman .401" 175gr. mold on hands, from my old .40 S&W.
    "In lead we trust!"

  4. #4
    Boolit Grand Master








    Lloyd Smale's Avatar
    Join Date
    Mar 2005
    Location
    munising Michigan
    Posts
    16,745
    i bought a wolf barrel for mine before i even shot it. Was told i needed it for cast at those speeds. It shot ok but actually shot better with the factory barrel using cast. No harder to deal with then a 44 mag or 357. At those speeds your going to want to use a harder alloy. I like something 15-20bhn either pc or a good lube and my hands down favorite powder for full power loads is aa9. Its a ball powder so use a mag pistol primer in it but its really not nessisary. (i just have alot of mag primers i like to use up) The lee 175 tn works great but has to be seated about as deep as you can because the mag and chamber are on the short side.
    Soldier of God, sixgun junky, Retired electrical lineman. My office was a 100 feet in the air, closer to God the better

  5. #5
    Boolit Buddy
    Join Date
    Jul 2012
    Location
    Heart of the Lowcountry, SC
    Posts
    154
    It really is a good idea to slug your barrel as well. In the 9mm's, Glocks are notorious for having oversized bores. I size mine for .3575 and they don't lead, even with +P velocities.

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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
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check