Reloading for the Glock 10mm


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TheCracker
October 28, 2012, 06:32 PM
I am an experienced reloader but have never shot a glock much less owned one.

I am considering purchasing a glock 10mm to replace my Taurus tracker 44 mag as my archery season carry gun for protection from pigs, wild dogs, meth heads and rabid squirrels. I love the idea of having 16 rounds compared to 5. I'm not sure if ill go for the 20 or 29 yet, ill just have to hold them 1st.

Anyhow, I know that you can't shoot lead out of the factory glock barrel but is the glock 10mm like the glock 40 cal as in bulging cases.

If I'm going to reload for it should I just buy a aftermarket barrel and be done with it?

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2zulu1
October 28, 2012, 08:45 PM
I experienced a very bulged Winchester factory casing from a G20, it was bulged enough that it couldn't be resized.

The Glock barrel has never been fired again. A Lonewolf barrel has had some stout handloads fired through it and it's been totally reliable. When it came time to get a G20 SF, the Glock barrel was replaced with a Lonewolf barrel and the factory barrel is unfired.

Clark
October 28, 2012, 09:34 PM
I have a Glock 20, just so I can make fun of it.

With a 40 sw aftermarket barrel, it COULD make some real power with hot handloads.

The 10mm case heads is the weakest modern cartridge. The large Boxer primer pocket is so wide and the extractor groove is so deep, that there is just not enough brass in between. So it can't take much pressure and can't make much power.

The 10mm will never be popular. It has nothing going for it in reality.
It may look good on paper to some, so it will take a long time to disappear completely.

PowderMonkey
October 28, 2012, 10:09 PM
Blasphemy!

klyph
October 28, 2012, 10:39 PM
The 10mm case heads is the weakest modern cartridge. The large Boxer primer pocket is so wide and the extractor groove is so deep, that there is just not enough brass in between. So it can't take much pressure and can't make much power.
Lol, you're joking right?
The 10mm will never be popular.
It's already quite popular. It seems to be the most popular magnum auto cartridge.

tlen
October 29, 2012, 12:09 AM
The issue of bulging cases is Glock's chamber. Get an after market barrel and be happy.

Mike 27
October 29, 2012, 12:46 AM
They will bulge on heavy loads. I have had some that I had a hard time re-sizing with the factory bbl. If I had to do it again I would have probably bought a different brand. The Glock was the only 10mm I saw here in AK. It is however a good pistol, but very hard on your brass. The 10mm is a great cartridge though with plenty of power to do what you need. I even carry mine here in AK with the bigger critters when I don't feel like hauling the 44mag.

PowderMonkey
October 29, 2012, 08:08 AM
Tell that to my 135 grainers at 1500fps. No significant bulging of my Starline 10mm Brass with that or any other of my warm 10mm loads. I don't do hot or nuclear loads in anything.

That being said, all full power 40/10 are high pressure rounds 35,000 and 37,500 psi max. I run all 40/10 brass through a Redding GRX Pushthrough carbide sizing die on a single stage before dumping the catch can into the case feed hopper on my LnL. No issues here man.

flightsimmer
October 29, 2012, 08:18 AM
I have a Glock 20, just so I can make fun of it.

With a 40 sw aftermarket barrel, it COULD make some real power with hot handloads.

The 10mm case heads is the weakest modern cartridge. The large Boxer primer pocket is so wide and the extractor groove is so deep, that there is just not enough brass in between. So it can't take much pressure and can't make much power.

The 10mm will never be popular. It has nothing going for it in reality.
It may look good on paper to some, so it will take a long time to disappear completely.
I have never had any problem of any kind with the 10mm, it all depends on the chamber it is fired from. BTW I shoot home cast lead too.

10mm, when you care enough to send the very best.

hentown
October 29, 2012, 12:11 PM
Two things I'm sure of: (1) I learned a long time ago not to take reloading advice from Clark :eek:and (2) I don't have any motivation to load nuclear rounds for my G20. I've never seen a bulged case from any of my Glocks, but I do use a Lonewolf barrel in my G20, as I get more reloads out of my brass with the LWD barrel than with the Glock factory barrel.

I don't reload lead for any of my firearms. Just don't like screwing around with lead.

readyeddy
October 29, 2012, 02:26 PM
Definitely get the aftermarket barrel. KKM is a good one.

Elkins45
October 29, 2012, 05:57 PM
Short answer- you will ruin your brass with anything approaching full power loads if you use the factory barrel. I have read that the new guns aren't as bad, but I just bought a new 20SF and it's just as bad as my mid-90's version. I love the 10mm, but if you want to shoot anything except factory new ammo then you need to budget an extra $100 or so for a fully supported barrel.

BTW-- with all due respect I wouldn't take reloading advice from Clark. I've read enough of his posts to know that he goes out of the way to see how far his loads can exceed SAMII specs. 10mm cases are perfectly safe at max SAMII pressures for multiple loadings. If you're shooting a Glock it will be the ramp bulge that fails your brass, not a web failure.

TheCracker
October 29, 2012, 11:52 PM
Thanks for the replies!

I wasn't sure if the glock bulging issue was just on the 40 cal or what. Seems like that's all I had ever read about the bulging.

I was thinking I would go ahead and get an aftermarket barrel eventually so I could shoot hard cast. Guess it will be purchased right off the bat.

Cleftwynd
October 30, 2012, 12:26 AM
I have a G22C and after thousands of rounds have never ever had an issue with brass, bulges, jamming, sticking, MF's, FTF's, FTE's, reloading, sizing, nada.... maybe I just got lucky?

Float Pilot
October 30, 2012, 12:45 AM
I have a G-20 slim. So far I have installed a heavier recoil spring and guide rod. I was going to buy a better barrel, but airplane parts to priority.

I carry mine in a chest holster while flying... For 30, well ok almost 40,,, years I was carrying a 44 mag,,, BUT... big bears have become a secondary problem compared to the two legged yahoos I run into out in the bush...

My carry loads are virgin brass, So I do not care about bulged brass.

200 grain Hornady XTP
13.8 grains AA #9
Starline brass
Fired from a stock Glock 20 SF
CCI-300 primer = 1,150 fps good group
Win WLP primer= 1,165 fps and a double group
CCI-350 mag primer = 1,190 fps and a group slightly larger than the 300s


Average velocity of 5 rounds Factory Loads from G-20SF
200 grain Hornady XTP= 1,050 fps (huge group)
175 grain WW Silvertip= 1,195 fps (Ok group)
180 gr Fed Hydra Shok= 955 fps wimpy FBI loads
200gr CorBon penetrat= 1,065 fps Not as advertised
200gr Norma FMJ (1980s) = 1,177 fps Very accurate, very clean, best accuracy of all factory ammo. Just need a time machine to buy more.


*200 gr XTP, 14.0gr AA#9, CCI-300,star-line, 1.255col, = 1,169fps good grp
200 gr XTP, 8.4gr 800X, CCI-300, star line, 1.259col, = 1,100fps large grp
200gr XTP, 13.8gr AA#9, CCI-350, Starline, 1.257col= 1,190 fps OK group
*200 gr XTP, 13.8gr AA#9, CCI-300, Starline, 1.257col= 1,136fps good grp
*Best groups of hand-loads today.

180gr Speer TMJ. 9.8gr 800X, CCI-300, Star-line, 1.257col=1,235fps huge grp
Note velocity spread from 1,190 to 1,280 fps during 15 rounds fired
180gr TMJ, 14.5 AA#9, Fed 155mag, Hornady brass, 1.250=1,168 blown primers, bad grp. no other pressure signs,,, wonder about those #155 primers BAD LOAD

G-20SF with stock barrel and spring.
200 grain Hornady XTP. All loaded to 1.250 col. Groups at 15 yards, temp 20F
All with 14.0 grains AA#9 Star-Line brass
CCI-300 = 1,162 fps (30fps ES) and a 2.0 inch group (within 7 fps from the other chronograph)
WW-WLR= 1,151 fps (7 fps ES) and a 1.5 inch group
CCI-350= 1,188 fps (18fps ES) and a 0.80 inch group


G-20 with 20 pound spring and new guide:
180grain Hornady XTP HP
14.7gr AA#9
CCI-350, 1.257 col taper crimp
1,322 fps OK group

200gr FMJ-FP Hornady
13.5gr AA#9
CCI-350
1,250 col taper crimp
1,220 fps good group
14.0 grains was 1,245 fps and over pressure. But good group


Taper Crimp Experiment:
Bullet: 200 grain Hornady FMJ-FP Case: Star-Line virgin Primer: CCI-350
Powder: AA#9 13.2 grains.
COL: 1.250 inch Fired from a Glock 20sf, 20 pound recoil spring and stainless guide rod. Stock 4.7 inch barrel Temp 20F. 20 knot wind, blowing snow.
0.25 turn crimp = 1,110 fps
0.50 turn crimp = 1,154 fps
0.75 turn crimp = 1,166 fps
1.00 turn crimp = 1,188 fps duplicates original Norma Load in Glock 20
1.25 turn crimp = 1,160 fps
1.50 turn crimp = 1,152 fps

155 grain Hornady XTP hollow points:
The brass, primer and COL are all the same.
Only 14.8 grain of AA#9.
0.75 turn crimp = 1,270 fps and a very nice group
1.00 turn crimp = 1,290 fps
1.25 turn crimp = 1,256 fps
1.50 turn crimp = 1,245 fps

TheCracker
October 30, 2012, 09:09 AM
Thanks for the data Float

ATLDave
October 30, 2012, 10:37 AM
A friend of mine has a Glock 20. His bulges brass. It will run fine through a resizing die, but sometimes they grow enough to require trimming after only one or two firings. And he doesn't load stuff particularly hot.

cheygriz
October 30, 2012, 01:27 PM
Get a Glock 20, and install a Federal aftermarket barrel. Problem solved as far as bulging, and you have one very fine, powerful handgun.

plateshooter
October 31, 2012, 07:22 AM
I have a G20 gen3 with 2 aftermarket barrels. I use a 10-40 LWD conversion barrel, and a 5.15" LWD barrel in 10mm to be legal for hunting where I live. Out of all the guns I have collected in the last 50 years, the G20 is my most used pistol.

I don't load above the max in the manuals. I use Blue Dot for my 180gr jacketed and lead 10mm loads. I have had no case bulging problems with 10mm or 40 brass using any of my 3 barrels.

My personal experience, yours may vary

atblis
October 31, 2012, 08:27 AM
I would get an aftermarket barrel due to the Glock chamber not supporting the brass. If you're a hand-loader, you may consider getting a 40 S&W barrel (this follows from Clark's point). 40 S&W in a 10mm gun loaded to 10mm length, is 10mm except the cases are stronger due to the small primer pocket. In general, 40 S&W has a stronger case than 10mm. To a handloader, a Glock 20/29 with a 40 S&W barrel loaded long (assuming it's throated for it) has a couple advantages--> basically free brass, and stronger. Does everything 10mm does, and possibly more, and you don't need to crawl around on the ground trying to recover all your casings.

CountryUgly
November 5, 2012, 05:22 PM
I've got 3rd Gen's in 20 and 23. Both factory barrels have produced bulges with anything other than mild/factory rounds and even then most do usually bulge. I do not however use them often both guns have multiple barrels from LW and Storm Lake in various calibers :) I love the variety that the Glock and 10mm give me. I mean really with 2 guns and 1 parent brass (save for 9mm) I have 10mm, .40, 9mm, .357sig and soon to be added 9x25 Dillion and they all work with the same mags with each gun except the 9mm but it's cool to see folks faces when they see a big 23 on the slide banging out 9mm with a 33 round stick :)

rogn
November 5, 2012, 09:00 PM
GOT A G20 LAST YEAR AND IMMEDIATELy found a 6.02" Lone Wolf Barrel. Significant load of Long shot in Starline brass with 200gr Hornady XTP or 200 gr Nosler sport produces about 1250FPS and very good accuracy. Have used the factory barrel also. Did convert to 22# SPRING. Brass looks like new. My son uses the same type of loads with as printed here AA#9 whir similar velocity and accuracy. HE USES THE FACTORY BARREL, ALL CASES LOOK GOOD.I load a bit long and use a taper crimp. Clean the magazine periodically.

thub
November 5, 2012, 09:29 PM
Love my G 20 also own glock 23 and glock 27. Reload for all of them. Glock 20 is a great shooter along with being much more potent than the .40 cals, you can tell it from the ballistic charts to experiencing it yourself at the range.

Wil Terry
November 6, 2012, 11:22 AM
I have a Glock 20, just so I can make fun of it.

With a 40 sw aftermarket barrel, it COULD make some real power with hot handloads.

The 10mm case heads is the weakest modern cartridge. The large Boxer primer pocket is so wide and the extractor groove is so deep, that there is just not enough brass in between. So it can't take much pressure and can't make much power.

The 10mm will never be popular. It has nothing going for it in reality.
It may look good on paper to some, so it will take a long time to disappear completely.
PHOOEEEY !!! YOU know better than this.....I hope !!!

Clark
November 6, 2012, 01:07 PM
I have a Glock 20, just so I can make fun of it.
Wil Terry Quote:
PHOOEEEY !!! YOU know better than this.....I hope !!!
CAUTION: The following post includes loading data beyond currently published maximums for this cartridge. USE AT YOUR OWN RISK. Neither the writer, The High Road, nor the staff of THR assume any liability for any damage or injury resulting from use of this information.

A stock Glock 20 10mm or a stock Glock 22 40sw will get case bulges at ~ 30% more powder than max published.

~ 10 years ago I put a Bar Sto after market barrel in the 10mm.
I welded up the feed ramp in the 40sw and re cut the chamber and feed ramp
http://www.thehighroad.org/showthread.php?t=15437
http://www.thehighroad.org/attachment.php?s=&postid=191655
http://www.thehighroad.org/attachment.php?s=&postid=245376

10mm book load:
200 gr "Hi-Skor" 800-X 7.8gr 1130fps 32500 psi

10mm my test load:
800X, 200 gr. .658", 14.2 gr., G20 Barsto, small case bulge and case failing, must stop, 82% extra powder

40sw book load:
"200 GR. HDY XTP IMR 800-X 1.125" 6.1 gr 951fps 31,000 PSI Speer 200 gr. FMJ

40sw my test load:
12.5 gr. and more requires double compression, 15.5 gr. the OAL springs out to 1.171", 15.5 gr. is ok, intense recoil +154% extra powder

40sw pros:
More powerful handloads
shorter case makes shorter frame grip
brass is cheaper
brass is easier to find
pistols are more plentiful
more pistols to choose from
brass is stronger
cartridge not going obsolete soon

10mm pros:
factory ammo is more powerful

GooseGestapo
November 7, 2012, 11:07 PM
Indeed!
In 1991 I got the first 1006 I could lay my hands on. It had the adjustable sights. I later put a set of the "FBI" palm swell grips on it.
What a gun! I killed several deer with it. Even got my NRA "distinguished" badge with it.
Needed something else, so I sold it for a handsome price....

In 1992, an aquaintance who had spent 18mos in Iraq/Kuwait with the 24MI running Sadaam out of Kuwait, came back and needed some cash for incurred expenses in his absence from the country.

I bought his G20. Took it out and intended to run through some left over ammo from the S&W. First round fired, but smoke emanated from the gun... odd, I thought.
Second round, uneventful, so I thought.
Third round.... OUCH ! OUCH! OUCH!..... magazine was laying on the ground, gun was smoking and I looked closely and the slide stop was sticking out at a funny angle and slide was locked back with case still on slide face....

All three cases had blown out case heads... Only the third one leaked gas sufficient to "get my attention"....

That particluar load was a book listed max for AA#7 and Hornady 200gr XTP in Norma cases at the time... It was a marvelous load in the 1006 and duplicated the original lot# of Norma at ~1,200fps.

Since then, the published max load has been reduced nearly 2.0gr to current level, solely due to the Glock Mod-20's....
This in my opinion is why the .40S&W took off, and the 10mm has languished.... the extra recoil and "only" 100-200fps advantage over the .40 makes it "moot"....
I've still got my "issue" M22... but don't shoot it much...
I prefer the .357mag or .44mag or .45lc in my revolvers; in my "retirement"....
I'm too old and arthritic to run down the "rare" 10mm cases. Besides, the "real 10mm loads" throw them 20ft+...

I have also taken an equal number of deer with the .40 and 155gr bullets (Sierra, Hornady, and Winchester factory 155gr Silver-tips. All at around 1,200fps). Works just as good as the 10mm for me.
That; and a relative of an aquaintance of mine got "jumped" by a ~500lb grizzly near the Copper River valley area of eastern Alaska. A magazine of .40 fmj later, the bear lay dead..... Worked that time, at least....

moonzapa
November 24, 2012, 12:29 AM
I altered my Glock 20 with a Wolf spring kit. That's it. I use max loads, but I don't exceed max loads and I never have experienced bulged cases!!!! I use new brass or once fired brass, only. My favorite "giddy-up" load used Power Pistol powder. Lots of wallop. Good Shooting!!!

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