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10mm

EMNofSeattle

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Aug 7, 2012
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S. Kitsap, Washington state
10mm is a waste of money unless you're a handgun hunter. And even then the modern 10mm loadings are barely greater then the .40 caliber so unless you hand load 10mm to the original specification you're basically shooting .40 +p and the original 10mm loadings would cause extreme wear on your pistol.... So no I do not own a 10mm nor would I recommend it. If you want that bullet choose .40 S&W if you want a more powerful cartridge I'd get a revolver in .41 or .44 magnum...
 

mark5019

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Apr 9, 2008
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133
Location
atlanta ga
10mm is a waste of money unless you're a handgun hunter. And even then the modern 10mm loadings are barely greater then the .40 caliber so unless you hand load 10mm to the original specification you're basically shooting .40 +p and the original 10mm loadings would cause extreme wear on your pistol.... So no I do not own a 10mm nor would I recommend it. If you want that bullet choose .40 S&W if you want a more powerful cartridge I'd get a revolver in .41 or .44 magnum...

i disagree i used to carry a 10 but lack then/now of ammo put me into 45 acp
 

EMNofSeattle

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S. Kitsap, Washington state
i disagree i used to carry a 10 but lack then/now of ammo put me into 45 acp

so maybe you like carrying a 10mm, that doesn't render any of what I said innaccurate.

take a look at the loading data for 10mm Auto and .40 S&W

in most cases the 10mm outperforms the .40 S&W with a comparable loading... by about 100 to 150 fps.

not a huge improvement, especially when both shoot the same bullet. and 10mm costs more and requires a larger platform to shoot.
 
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Marco

Regular Member
Joined
Jul 29, 2007
Messages
3,905
Location
Greene County
Please show me the 40SW load that matches?



Underwood ammo
Technical Information

  • Caliber: 10mm Auto
  • Bullet Weight: 220 Grains
  • Bullet Style: Hardcast Flat Nose
  • Case Type: Brass

    Ballistics Information:
  • Muzzle Velocity: 1200 fps
  • Muzzle Energy: 703 ft. lbs.
As for excessive wear heavier springs can negate much of that. But it's not like you're going to be shooting this load all day punching paper..

Been shooting 10mm since 1990......



OP, you didn't state what your intended use was for the 10mm.
If I were to carry a 10mm as a PDW in an urban environment this is the load I'd use.
These are the list of ammo makers I'd use:
Underwood, Buffalo Bore or Double Tap/Reed's/ Grizzly/Atomic/Winchester (win silvertips not for hunting or in bear country) for non reloaders check out Georgia arms, BVAV and PRVI (?).. for range ammo.


But, I would say if you don't already have a quality 10mm don't get one if:
If you don't hunt or don't expect to deal with bears
If you have a quality gun chambered in any other decent caliber for PDW

Or a quality gun in 45acp if you intend to hunt or be in bear country... as they can be converted to 400corbon/40super (bbl/spring swap) or 45super/450SMC (simple spring swaps most of the time) or my personal favorite 460Rowland


Also, check out atomic ammo's 45acp.... works well for my wife in her XDS



Underwood ammo
Information
  • Caliber: 460 Rowland
  • Bullet Weight: 230 Grains
  • Bullet Style: Speer Bonded Jacketed Hollow Point
  • Case Type: Brass

    Ballistics Information:
  • Muzzle Velocity: 1400 fps
  • Muzzle Energy: 1001 ft. lbs



Technical Information

  • Caliber: 460 Rowland
  • Bullet Weight: 255 Grains
  • Bullet Style: Hard Cast Flat Nose
  • Case Type: Brass

    Ballistics Information:
  • Muzzle Velocity: 1300 fps
  • Muzzle Energy: 957 ft. lbs

Never really liked the G29 as a G20/1911 (full sized guns) offers better recoil control and the longer bbls/slides offer a longer sight pic and higher velocity.
 
Last edited:

EMNofSeattle

Regular Member
Joined
Aug 7, 2012
Messages
3,671
Location
S. Kitsap, Washington state
Please show me the 40SW load that matches?


Underwood ammoTechnical Information

  • Caliber: 10mm Auto
  • Bullet Weight: 220 Grains
  • Bullet Style: Hardcast Flat Nose
  • Case Type: Brass

    Ballistics Information:
  • Muzzle Velocity: 1200 fps
  • Muzzle Energy: 703 ft. lbs.
As for excessive wear heavier springs can negate much of that. But it's not like you're going to be shooting this load all day punching paper..

Been shooting 10mm since 1990......

But, I would say if you don't already have a quality 10mm don't get one if you have a quality gun chambered in 45acp... as they can be converted to 400corbon/40super/ or 45super ( simple spring swaps most of the time) or my personal favorite 460Rowland



Underwood ammo
Information
  • Caliber: 460 Rowland
  • Bullet Weight: 230 Grains
  • Bullet Style: Speer Bonded Jacketed Hollow Point
  • Case Type: Brass

    Ballistics Information:
  • Muzzle Velocity: 1400 fps
  • Muzzle Energy: 1001 ft. lbs



Technical Information

  • Caliber: 460 Rowland
  • Bullet Weight: 255 Grains
  • Bullet Style: Hard Cast Flat Nose
  • Case Type: Brass

    Ballistics Information:
  • Muzzle Velocity: 1300 fps
  • Muzzle Energy: 957 ft. lbs

I did cite modern loading charts, if you note in my post the terms 10mm and .40 are hyperlinked to charts.

Yes 10mm CAN be far more powerful, but few commercial manufacturers load to the original loading, most load to the FBI lite loadings. I'm not convinced a 10mm pistol would stand up to repeated use with a full power loading. Kind of like the smith k frame .357s where S&W told departments to only use .357 for carry and duty qualification and shoot .38 special for all other times. They could only take so much of that full loading...
 

Marco

Regular Member
Joined
Jul 29, 2007
Messages
3,905
Location
Greene County
I did cite modern loading charts, if you note in my post the terms 10mm and .40 are hyperlinked to charts.

Yes 10mm CAN be far more powerful, but few commercial manufacturers load to the original loading, most load to the FBI lite loadings. I'm not convinced a 10mm pistol would stand up to repeated use with a full power loading. Kind of like the smith k frame .357s where S&W told departments to only use .357 for carry and duty qualification and shoot .38 special for all other times. They could only take so much of that full loading...


So we agree 10mm has an advantage over 40sw for those that may need/want it. I named quite a few makers that load full house 10mm.
Yes, and a 40SW loaded to max to try and match 10mm isn't going to far much better.. we already have reports of 40sw guns exploding.
Now to be fair we don't always now what the shooter loaded to cause those 40SW to explosions.. but I have no personal knowledge of any 10mm blowing up.
Still rocking my G2 G20.. and Colt Delta Elites bought new back in the 90's.
 

wizzi01

Regular Member
Joined
Dec 11, 2012
Messages
127
Location
Detroit
If you can rent one try it out. Do not listen to anyone crying about it isn't worth the cost. Get some underwood ammo for it and get to carrying. (After of course you thoroughly test it)
 

wizzi01

Regular Member
Joined
Dec 11, 2012
Messages
127
Location
Detroit
10mm is a waste of money unless you're a handgun hunter. And even then the modern 10mm loadings are barely greater then the .40 caliber so unless you hand load 10mm to the original specification you're basically shooting .40 +p and the original 10mm loadings would cause extreme wear on your pistol.... So no I do not own a 10mm nor would I recommend it. If you want that bullet choose .40 S&W if you want a more powerful cartridge I'd get a revolver in .41 or .44 magnum...

I hope you carry nothing but hi points, because anything else is just a waste of money.
 

The Truth

Regular Member
Joined
Jul 18, 2014
Messages
1,972
Location
Henrico
Was going to start literally the same thread. Glad I searched.

As said in my .50 cal thread, 10mm is looking more and more like my next weapon of choice. I love the numbers that the .41 Mag puts out, but they are more rare than the 10mm. I also love the .357 Mag but I like a slightly bigger bullet and feel I can get better performance from the 10mm.

Let me start by saying I am not a Glock fan. I have never liked the ergonomics and I consider myself more of an all steel frame kinda guy. I picked up a Glock 29 10mm at the gun shop today though, and I hate to admit it, but I really liked it. I still have concerns though.

1) Will the lightweight nature of the frame exaggerate the added recoil of a 10mm at full load?

2) Can I find a mag or extended mag with an extended grip attachment made for 10mm?

3) Is it really that hard to find ammo?

Also, I would want to shoot as high velocity and high energy loads/bullets as possible. I would still carry my Sig P229 .40 in the city but the G29 would probably be more my "in the woods" carry, although I could see myself enjoying the 10mm more as an all-around carry piece.

I have also looked at the Colt Delta Elite and I think my grandaddy "later-in-life" choice would be a custom gunsmithed Sig P220 chambered in 10mm. In my head it's G29 - $630, Delta Elite - $1,000, Custom P220 - ~$2,300. I'm not against 1911 platform but I don't know if I want my 10mm to be a 1911.
 
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The Truth

Regular Member
Joined
Jul 18, 2014
Messages
1,972
Location
Henrico
Thanks for the heads up!

I also answered my own question on grip extension for the G29. Found a product made by A&G that allows one to utilize the higher capacity G20 magazine while extending the grip. Pretty cool.

Also came across Double Tap and Buffalo Bore for hot loaded ammo.

I'm almost convinced I should pick up the G29. If anyone wants to talk me out of it speak now or forever hold your peace! Haha!
 

1245A Defender

Regular Member
Joined
Jul 7, 2009
Messages
4,367
Location
north mason county, Washington, USA
Well,,,

Why G29?
A short barrel in 10mm will probably be equal to a long barrel in .40!
An ad in waguns.net is offering a G21 with many mags,,,
with a G20 slide and barrel and many mags for 1050$ total,,
or 640$ for just the G21.
Im not a glock fan and prefer the witness,,
But I really like a really full size!

Soo,, Do you just want a compact? Or do you want the full potential of the 10MM!!?
 
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The Truth

Regular Member
Joined
Jul 18, 2014
Messages
1,972
Location
Henrico
It seems like with the right load I can achieve true 10mm performance (or damn close) even in a compact.

Honestly the Glock 20 is one of the ugliest things I've ever seen. I like the aesthetics of the 29 better, and with the G20 mag it'll feel like a full size.

I don't know... I'm still undecided. I do ike that Witness Steel Full Size. I'm really thinking about it... it is a sweet piece.
 
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