10mm aftermarket barrels

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 , in my opinion youll be better armed with a 44 mag--454, 445, 460, or 500 mag on much larger game.
from a realistic view point , your very unlikely to need to defend yourself with any handgun.





https://www.luckygunner.com/labs/10mm-auto-self-defense-ammo-ballistic-gel-tests/
people with little field experience always think ,
its a total no-brainer, more shots is the way to go.
glock 10mm holds 15 shots,
with maybe 650 ft lbs of energy per cartridge,
and maybe 200-210 grain bullets

a 500 S&W only 5 shots, with an easy 2200 plus ft lbs of energy,
per cartridge
and maybe 400-500 grain bullets

a 44 mag
S&W only 6 shots, with an easy 1250 plus ft lbs of energy,
per cartridge
and maybe 240-310 grain bullets

the problem is time, and distance,
your almost always limited, if your attacked and while you may have the time to get off,
two or three shots on a charging bear, that's about the best case.

yes you might get off an additional shot or two with a 10 mill,
but only hits that reach the vitals count!
make your choice both potentially work,
its the skill and nerve of the operator thats critical,
but Id prefer more power and deeper penetration and 2-3 times the impact energy in a double action mag revolver.

From decades of experience ,hunting, I can assure you,
the mag revolvers with hard cast bullets punch considerably deeper.

thats not suggesting the 10mm lacks lethality in skilled hands
its just physics, remember you might only get one or two shots off, your potentially compromising making either choice

Glock2010mm1.jpg

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
10mmGlock20overload.jpg

10mmsup.jpg

crIMG1802.jpg
LebJ5KZ.jpg

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!"
 
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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 very rapidly prove lethal,

a hard cast gas check bullet in a 357 mag does impressive damage
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, and potentially more accurate,
in stopping a bear at close range,
with accurate, and rapidly 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
you're unlikely to get more than a couple shots off.
If my life's 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.
yeah a 10mm might be adequate and easier to hit with,
but Id rather have 2-4 300 grain hard cast bullets, from a larger bore revolver shots ,
than potentially maybe, twice as many from a lower power semi auto.
mostly because I doubt youll get more than 2-3 shots off with either handgun at most.
attachment.php


ive used blue dot in 10mm almost exclusively for good results


Accurate Arms manual ( 2010 data ) using no 9 powder---------
155gr AA#9 15.9gr 1414 fps
165gr AA#9 15.0gr 1341 fps
180gr AA#9 13.5gr 1242 fps
180 Speer JHP: AA#9 14.5gr 1290fps 32,600psi ( AA Manual #2)
180 XTP: AA#9 13.5gr 1242fps 34,100 psi ( AA Manual #2 )
200gr AA#9 12.5gr 1170 fps

Hodgdon manual (2010 data) -------------------------
135gr Autocomp 9.5gr 1476fps 34,500 psi
155gr Autocomp 8.9gr 1362fps 35,700 psi
155gr IMR 800-X 9.8gr 1350fps 30,000 psi *NOTE PRESSURE
180gr IMR 800-X 9.7gr 1320fps 34,200psi ( 2004 IMR manual )
180gr Longshot 9.5gr 1287fps 34,800 psi
200gr Longshot 8.2gr 1172fps 35,000 psi
***note Autocomp is a Winchester powder

Accurate Manual (edition 3.2.2) re AA#7
180gr Hornady XTP (JHP) with a max of 10.7 grains AA#7
180gr Ranier plated HP, with a max of 11.0 grains AA#7
190gr Sierra FPJ with a max of 11.2 grains AA#7

Alliant Manual (2010 data)-------------------------
180gr Speer GDHP bullet
180gr Blue Dot 11gr 1295fps
165gr Speer GoldDot Power Pistol 10gr 1314fps

Hornady 7th edition Manual------------------------
Hornady’s 180gr bullets MAX: AA #7 12.0 gr @ 1200 fps
155gr HP XTP MAX: AA#7 14.6gr.

Speer #14 Manual-------- 5” barrel
180gr GDHP or TMJ-FN MAX BlueDot 11.0gr @ 1295 fps.
Strangely, this Speer manual does not list AA No.9
for 180gr bullets, but does for some of its lighter bullets in 10mm.
https://www.speer-ammo.com/download...gun/40_caliber-10mm_400_dia/10mm_Auto_180.pdf

https://www.accuratepowder.com/wp-content/uploads/2011/01/accurate_load_data_3.5.pdf
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

Ive shot lots of hogs with a 10mm and a 44 mag and a few with a 500 mag, the difference,
in the games instant reaction , on bullet impact IS usually noticeable, all are lethal,

and shot placement is always critical




keep in mind, that if you prefer a semi auto with a large capacity magazine,
the glock pistols in 10 mm have a 15 shot capacity and 30 shot mags are available,

https://gunmagwarehouse.com/sgm-tactical-glock-20-10mm-30-round-extended-magazine.html

a hard cast gas check bullet weight near 200 grains will provide both deep penetration
(mandatory for good results)(as is decent shot placement)..
and if you want reasonable velocity in a 10mm hand gun like a glock model 20 or 40
youll need to hand load ammo in most cases, if you want to keep cost reasonable,
as commercial 10mm heavy bullet ammo can easily cost $1.00 a cartridge
obviously a 6" 10mm barrel designed to use cast bullets helps

https://www.accuratemolds.com/bullet_detail.php?bullet=40-215G

https://www.accuratemolds.com/bullet_detail.php?bullet=40-225LG

https://www.lonewolfdist.com/PRODUCT/920324/aw-20l10/alphawolf-barrel-for-m-20l-40-10mm-6-
https://www.sagesoutdoors.com/40-bss-caliber-caliber-gator-gas-checks/

if you graph out velocity vs bullet weight and test penetration, and calculate energy potentially delivered to the target,
you want something in the 180 grain-220 grain weight range\

(180-200 grain hard cast seem to be very effective on deer & hogs)
https://noebulletmolds.com/site/shop/401/403-198-wfn-y1/403-198-wfn-y1-4-cavity-gc/




 
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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


https://www.lonewolfdist.com/4882/10mm-45acp-barrels/aw-2010th


the 40 S&W-45ACP and 10mm all have long proven records of being effective defensive cartridge choices
yet the projectile selected has a huge effect on how accurate and potentially lethal any handgun is!
its the person using the handgun that must match the ammo, you select to,
get the best accuracy and
reliability, to its intended use, to get the best and most consistent results.

but keep in mind handgun use requires constant practice to be proficient,and accurate!
having precise shot placement and a knowledge of your assailants anatomy is critical to getting good results

most cheap practice ammo is not loaded with quality bullets nor is its velocity or accuracy top notch
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interesting video but look at the link below and see how much your projectile choice effects the results
 
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https://www.luckygunner.com/labs/10mm-auto-self-defense-ammo-ballistic-gel-tests/

with the test ammo used,
4.6"=1307 FPS, while with identical ammo the 6" version showed a 1387=FPS average or it gained 80 FPS with the added length






 
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just a bit of personal field experience,
acquired over 5 decades plus!

I've killed several hogs maybe 9-12 or so,
(most in the 80lbs-120 lb range)
with using both the 10mm glock and or a 45 acp, handgun,
both are similar in effectiveness as far as I can see,

as always, shot placement is critical if you want good results.
punching holes in the lung/heart area on hogs,
with either semi auto handgun, usually results in, a death run in heavy cover

I've had marginally better results with the 200 grain hard cast bullets in the 10mm ,
than with the 230 grain hard cast bullets used in the 45acp
(that GLOCK 10mm is
equipped with a 6" aftermarket barrel)
lung heart shots almost always result in a 30-50 yard death run,
head neck shots must be made precisely to work correctly,
but if done right work almost instantly.
neither one of the semi auto pistols are nearly as effective as my 445 DWSM with a 310 lee hard cast bullet!
but all three options can kill a hog rapidly with good shot placement!
img_20180621_181026-jpg.517634

keep in mind most of the hogs shot were in heavy brush at less than 20-25 yards
445rt.jpg

my eaa 45 acp witness like the one below is exceptionally accurate
for hogs and deer its adequate but Id look elsewhere for ideal bear protection or hunting elk.
images
 
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the 10mm pistols have gained a reputation for being adequate for both hunting and personal defensive use,
while the undeniably availability to have a 12-32 shot 10mm magazine looks impressive,

if you've watched most of the videos of bear attacks that is almost meaningless,
simple due to limited time and very short distances,
as the attacks happen very fast at very close ranges,
I've yet to see a single video where the potential victim,
had the time to get off over 5 shots , that were made directly at a charging bear!
(I read one account where a guide kept the pistols chamber empty for safety,
and died with a full magazine as he did not have the time to work the slide before the bear knocked him down)
(shots into the ground hoping to scare a determined bear who has decided to attack,
rarely help, but they may scare a curious bear)
where a 10mm excels , is in the fact most people willing to practice can learn to shoot one well.
( or at least far better than the 44mag and larger revolvers)





 
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AFTER WATCHING ALMOST A DOZEN extensively documented BALLISTIC TESTS
and medical reports on wound lethality, and endless videos on u-tube
it's become all too obvious that the 357 mag, 10mm and 45 acp handguns
while top choices in a concealed carry defensive handgun.
ALL depend on both precise shot placement and proper projectile selection,
and a good knowledge of the targets anatomy to work effectively.
no pistol approaches the potential effects' of a common deer hunting or battle rifle in
calibers 6.5mm-30 caliber in lethality.
yes those three handgun calibers (and a dozen plus similar cartridges,)
are very effective in skilled hands.
while for personal defense , these are top options but for hunting ,
Id personally suggest a 44 mag or larger caliber revolver, simply based on personal experience
 
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