10mm aftermarket barrels

Discussion in 'handgun related' started by grumpyvette, Jun 27, 2013.

  1. grumpyvette

    grumpyvette Administrator Staff Member

    the 10mm is rather unique in that its one of the few auto pistol calibers designed to exceed the 357 mag revolver power level.
    and once you can exceed the 357 mag, you at least in theory can use the pistol as a decent hunting caliber option.
    theres dozens of aftermarket barrel suppliers and designs differ in the areas they support the brass case,s thus the strength limitations on the designs vary
    Un fortunately, theres a tendency to try to overload the 10mm to allow it to reach true 41 mag power levels, the best advice is to keep load levels reasonable the 10mm if fine for deer, hogs and smaller bear, I know from experience it does a fine job on deer and hogs at ranges under 50 yards , with good hand loads and exceeding 650ft lbs of energy is not difficult with a longer 6" barrel.
    but youll be better armed with a 44 mag--454, 445, 460, or 500 mag on much larger game

    http://www.handloads.com/loaddata/defau ... pe=Handgun

    http://www.loaddata.com/members/search_ ... ing%20Data

    http://www.lonewolfdist.com/Detail.aspx ... 27&CAT=237
    GLOCK SUGGEST YOU REPLACE SOME COMPONENTS EVERY 15K ROUNDS and OBVIOUSLY keep the pistol clean and regularly lubricated

    1. Recoil Spring Assembly: 3,000-4,000 rounds (Gen 1-3). 5,000-7,500 rounds (Glock Gen 4)

    2. Firing Pin Spring (striker): 15,000 rounds

    3. Firing Pin Safety Spring: 15,000 rounds

    4. Extractor Depressor Plunger Spring: 15,000 rounds

    5. Magazine Catch Spring: 15,000 rounds

    6. Standard Trigger Spring: 15,000 rounds

    7. Slide Lock Spring: 15,000 rounds

    8. Slide Stop Lever Spring (attached to slide stop lever): 15,000 rounds

    In keeping up with this maintenance schedule you can generally expect from proven data that this firearm has a good chance of reaching 100K without catastrophic failure.

    heres some stuff I cut/pasted here!
    "Seems like we need a good thread on why you might want one brand of aftermarket barrel over another.

    Yesterday I ordered a Storm Lake barrel for my G20. I won't find out till Monday if they've got one in stock or if mine will be added to the production lineup to build. Either way it is paid for and will be on it's way to me in the very near future. The one I ordered is a nonported, nonthreaded, nonblack finished (Isonite QPQ), 6.02" barrel for $175.00. And for the record I'm very excited about it! :D

    Now to the juicy details, outside of options and what length barrels are offered, that are the same for all barrels by each manufacturer:

    Bar-Sto (out of Sturgis, SD) http://www.barsto.com
    Steel = other than that it's a stainless steel, it's a secret I guess
    Hardness = 39 - 43 RC
    Rifling = broach cut
    Fit = semi drop-in (they claim 7 out of 10 times it should "drop in" without fitting), or, match target (100% of the time requires machining to fit)
    Claimed Accuracy = 1.25" @ 25 yards or better
    Cost of a bare bones G20 4.6" barrel = $215.00
    What else do they claim? - 14 to 16 week wait time for barrels not in stock...very best and most consistent product on the market...best service humanly possible...family run and owned since 1967 (started making their first auto pistol barrels in 1971)...full case support...and have been used to win every major pistol tournament worldwide.

    Storm Lake (out of Lenoir City,TN) http://www.storm-lake.com
    Steel = 416R stainless steel
    Hardness = 40 - 42 RC
    Rifling = broach cut
    Fit = usually drop-in, but occasionally require fitting
    Claimed Accuracy = N/A
    Cost of a bare bones G20 4.6" barrel = $160.00
    What else do they claim? - 6.5 weeks or less wait time for barrels not in stock...dedicated to excellence in accuracy, excellence in quality, and excellence in value...company has existed since 1983...full case support...proudly made in the USA.

    KKM Precision (out of Carson City, NV) http://www.kkmprecision.com/custom_pist ... s/home.php
    Steel = 416 stainless steel
    Hardness = 42 - 45 RC
    Rifling = button
    Fit = drop-in
    Claimed Accuracy = N/A
    Cost of a bare bones G20 4.6" barrel = $165.00
    What else do they claim? - leader in custom pistol barrel manufacturing for the last decade...one of the most accurate aftermarket barrels available today and our secret is our unique Button Rifling process...Glock barrels come with fully supported match chambers.

    EFK Fire Dragon (out of Mesa, AZ) http://www.efkfiredragon.com
    Steel = 416 stainless steel
    Hardness = 40 - 43 HC
    Rifling = Electrostatic Discharge Machine process
    Fit = drop-in
    Claimed Accuracy = N/A
    Cost of a bare bones G20 4.6" barrel = $150.99
    What else do they claim? - made in the USA...highest close tolerance of any barrel available today...products are proudly made and manufactured entirely within the United States...totally commited to customers satisfaction...EDM process produces an accuracy of +/- 50 millionths of an inch and a superior finish of 16 RMS or better.

    Lone Wolf Distributors (out of Oldtown, ID) http://www.lonewolfdist.com
    Steel = 416R stainless steel
    Hardness = N/A
    Rifling = broach cut
    Fit = drop-in
    Claimed Accuracy = N/A
    Cost of a bare bones G20 4.6" barrel = $109.95
    What else do they claim? - Polished feed ramp and bore...diamond turned exterior...maximum chamber support...improved feed ramp design...target crown.

    Lastly, some tidbits you may or may not care about -

    Hardness is measured by the Rockwell C scale. The higher the RC number the more brittle the steel is. A higher RC number does not equal greatest overall strength. It is simply a measurement of one aspect of the steel.

    Rifling: Button rifling stresses steel but leaves behind a highly polished finish. Broach cut rifling doesn't stress steel but doesn't leave as polished of a finish except that the barrel may still be polished afterward. The Electrostatic Discharge Machine process doesn't stress steel and leaves a highly polished finish.

    They all say they warranty defects in material and workmanship.

    All 416 SS is not created equal. 416 SS is basically a recipe for steel that allows some variance. 416 SS is by far the most commonly used steel for pistol and rifle barrels. 416 with an "R" after it is unclear to me but I've seen it said that if the "R" is designated it means rifle barrel quality. Though actual rifle barrels are not hardened to anywhere near the hardness of these pistol barrels (generally more like 30 - 32 RC). Sometimes the steel manufacturer heat treats the steel to the buyers specifications which would be optimal. 416 SS was developed for good gun barrel qualities while still being easy to machine as far as stainless steels go because of its sulphur content in the recipe.

    Hope this helps in the decision making process. Good Luck!"
    Last edited by a moderator: Feb 11, 2018
  2. Grumpy

    Grumpy The Grumpy Grease Monkey mechanical engineer. Staff Member

    everyone wants to select the best potential choice in tools for any job
    theres always a trade-off between high magazine capacity and easy carry,with
    a glock 10 mm with a 14 shot capacity
    and selecting max power and penetration,
    but use of a revolver with limited 5-6 shot cartridge capacity.
    only hits too the vitals count, a single hit with a hard cast 357 mag can prove lethal,
    with a well placed shot, power and penetration are important but shot placement is critical.
    what most people ignore is the available time frame and the ranges your likely to be facing.
    the truth is a balance needs to be struck, and you need to be able accurately place the shots,
    both rapidly and consistently, in a small area.
    most people will be far more consistent with accurate repeated shot placement,
    with a 357 mag or 10 mm due to lower recoil.
    but Id point out you may be limited in the time available,
    personally Id select a revolver 44 mag-480 ruger or 500 mag,
    as the extra penetration is without doubt there,
    and your unlikely to get more than a couple shots off.
    If my lifes in the balance,and I'm limited to a few shots,
    Id rather trust my results to a large bore revolver,
    but a 10mm has proven to work.

    you calculate muzzle energy
    vel x vel x bullet weight/450240

    a 10mm would have 650-700 ft lbs in most cases
    a 44 mag would have closer to 1100-1200 ft lbs
    a 500 mag would have closer to 2400 ft lbs

    Last edited: Apr 9, 2019
  3. Grumpy

    Grumpy The Grumpy Grease Monkey mechanical engineer. Staff Member

    heres a 10mm vs a 44 mag comparison video,
    in ballistic gel, but they used hollow points,
    in either caliber hard cast bullets,
    use, would significantly increase penetration

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