Info needed, 10mm Auto

[brigadier]

I thought the power of 10 mm was more like a 41 magnum instead of .357 magnum?

Heavy 10mm loads will match medium 41 magnum loads. The 10mm auto's performance capabilities match the .357 Magnum in pretty much all ways and then some in many cases. In terms of the sheer capabilities of the round, the 10mm Auto is closer to the .357 Magnum. There are plenty of things the 41 Magnum can do that the 10mm Auto never can. In one way, you can say that the 10mm Auto is right in between the .357 and .41 Magnum. In another way, you can say that it's a .357 Magnum that makes a bigger entrance hole.

The box of Double Tap 200gr XTP JHP I have on the shelf claims 1250 fps. Real guns don't usually get the factory's claimed velocities, but even if it does I'd hardly say it greatly exceeds your "typical" 200gr load.

Most factory loads are tested in closed chamber barrels, usually 18 to 22 inches in length, so the velocities that you are looking at are the velocities they would get out of a rifle. Double Tap uniquely gets all of their data from a Glock 20 with a 4.6 inch barrel, so in the case of Double Tap, you are getting the velocity that the ammo gets from the guns it's expected to be put through. Example, their 135gr JHP is listed at 1600FPS. I recently read an ammo review on it and the customer said that his chronograph results were giving an average of 1575fps out of a Kimber 1911 handgun.

If you're going to shoot reloaded ammo with a Glock 20 or Glock 29, use of an aftermarket barrel is strongly advised.

Part of the Glock's outstanding reliability in all environmental extremes, is due to the intentional, somewhat loose tolerances of the firing chamber. This feature makes the firing chamber unsuitable for reloads, as the brass cases are permitted to bulge beyond safe specifications for continued use.

I hate getting in to this since the Glock is a gun that allot of people have strong feelings about, but the truth is, most of the Glocks problems are result of overly tight tolerances. On top of that, every Glock KB I have ever heard of including one I was there for had one thing in common; the gun had an aftermarket barrel.
I have only seen one thing work for making Glocks handle reloads, and it works like a charm. Send the gun to magna-port and have it ported through the slide. Every Glock I have ever seen with that mod eats up anything and everything anyone puts through it.

And although I like the round don't forget about the 45 Super as well. Same numbers bigger hole

Very true, but the .45 SUPER, even though using the same chambering as the .45ACP, requires allot of adaptations for even a 1911A1 to be able to handle without smashing the gun to pieces. This includes reinforcements and spring changes that will make it unable to cycle properly on lighter .45ACP loads which puts you in a mess for versatility. Think of it like a Desert Eagle in the subject of cycling action. While the gun will still be normal size, affectively you'll have an auto-mag. Likewise, you are forfeiting your ability to fire mild loads for a larger entrance hole out of a much more scarce load. It's still a great idea, easily as good an idea as a 10mm, but remember that it is not without it's shortcomings. Personally, I don't care much about entrance holes, so I can't justify in my mind any advantage the .45 Super would have in my life over the 10mm Auto.

I saw a box of American Eagle in 10mm for about $28, Can I assume that reloading will make that much cheaper?

Yeah, but having looked around at what everything is going for, the 10mm Auto is not outstanding in price, just not broadly available in cheap plinking loads. Miwall makes a pretty decent 10mm plinker at a good price though.

If you just want a plinker, then give this a try:
http://www.outdoormarksman.com/product_info.php?cPath=65_1_4&products_id=253

http://www.outdoormarksman.com/product_info.php?cPath=65_1_4&products_id=84328

Out of stock at the moment but they restock allot. Miwall ammo is high on demand and for a reason.

 

[6Covered]

Not to start anything but...

Jim H. isn't it Large Pistol Primers?

About 99% sure that's what I use. In a couple of loads even use Magnum loads.

Receipe from Mike at DT, 180XTP, AA-7 with WLP350 = 1200 FPS

6.

 

[the pistolero]

My first 10mm pistol was a Kimber Stainless Target II; it now has a Dan Wesson Razorback keeping it company in my safe. I love them both; 10mm is a lot of fun. The DW was quite tight out of the box, but it ran great the last time I took it to the range. You made a great choice. As of yet I've only tried AA#9 when loading for the Centimeter, but it meters great and I get good velocity with it as well. Welcome to the club, my friend.

 

[R&J]

Reply To Brigadier

1) I hate getting in to this since the Glock is a gun that allot of people have strong feelings about, but the truth is, most of the Glocks problems are result of overly tight tolerances. On top of that, every Glock KB I have ever heard of including one I was there for had one thing in common; the gun had an aftermarket barrel.

2) I have only seen one thing work for making Glocks handle reloads, and it works like a charm. Send the gun to magna-port and have it ported through the slide. Every Glock I have ever seen with that mod eats up anything and everything anyone puts through it.

*****

1) This is exactly opposite of everything I've heard, read, and researched on the subject. It's mostly always naked lead hand-loads through factory barrels, or obviously too hot loads through OEM or aftermarket barrels. In either case, ammo related.

I'll also stand by the comments I made on chamber tolerances, until I read equally convincing material to the contrary.

2) I've a friend of many years, yes, the same Bob mentioned earlier, that has fired tens of thousands of reloaded rounds through a first gen G20, with a Bar-Sto barrel. No porting... He loads 90% of his own ammo with an elaborate Dillon set up.

Bob's into this stuff in a big way, owning upwards of 75 weapons at any time, many of which are rare collectables. His knowledge on this stuff is encyclopedic, and I'll stick with what he's taught me, since he can explain it, and demonstrate that it works.

Note: You 1911 fans would drool over Bob's collection; you wheelie guys too!

With respect,

Ray

 

[jfh]

Thanks, 6covered. That was a brain fart, I guess--it's corrected now.

Jim H.

 

[mpmarty]

so my tight chambered 10mm pistols aren't reliable? Gee whiz, I'd better quit shooting them since they've gone many thousands of rounds without expanding or bulging cases and never a misfeed or failure to fire or extract and eject. And all that without having to go buy an after market barrel to void the warranty.

 

[bigcim]

the pistolero, which hand gun out of the ones you listed do you like better
I bought a eclipse custom 10mm yesterday. After buying it I thought to myself, I hope there are internal differences over the eclipse stainless 10mm to justify the price difference.

 

[Whitman31]

To get this thread back on track, where can I find additional DW mags in 10mm?