Powder for 10mm Load???

[Jherexx]

Recently bought a G20SF, would like to load 180gr or 200gr XTPs and reach velocities similar to what Underwood Ammo loads (180gr bullets at 1300fps or 200gr bullets at 1250fps).

Never loaded this round before and was wondering which powders to use to achieve those velocities?

Using my google-fu, 3 powders came up that are probables, AA7, AA9 or 800X, anyone familiar with using these powders for 10mm? which of the 3 is best for my intended purpose?

Does anyone have other powder suggestions that may be better?

[SideShow Bob]

9.5 gn. of Power Pistol will push a 180 gr. XTP to 1350 - 1375 FPS. Use due caution and start 1-2 gn. Lower and work up watching for over pressure signs.

Your mileage may vary.......

[Rabid]

Power pistol, 800x and longshot have worked well for me in hot loads. 800x is a pain because it does not meter well at all but it is pretty safe for working up hot loads in 10mm. Be careful with the unsupported barrel in the Glocks. I would suggest you do some reading on the 10mmtalk forum http://www.ar15armory.com/forums/forum/253-the-home-brew-forum-reloading/ lots of good info over there

[Jherexx]

9.5 gn. of Power Pistol will push a 180 gr. XTP to 1350 - 1375 FPS. Use due caution and start 1-2 gn. Lower and work up watching for over pressure signs.

Your mileage may vary.......


Never looked at power pistol, will have to do more research. The Alliant website doesn't have that many recipes for the 10mm using that powder.

[Jherexx]

Power pistol, 800x and longshot have worked well for me in hot loads. 800x is a pain because it does not meter well at all but it is pretty safe for working up hot loads in 10mm. Be careful with the unsupported barrel in the Glocks. I would suggest you do some reading on the 10mmtalk forum http://www.ar15armory.com/forums/forum/253-the-home-brew-forum-reloading/ lots of good info over there

Was really worried about pressure spikes at that velocity and was looking hard at 800x since it had the lowest operating pressures. I'll check out the other forums you suggested, thanks.

[Zombie Steve]

180gr bullets at 1300fps or 200gr bullets at 1250fps

Never loaded this round before and was wondering which powders to use to achieve those velocities?



First, stop and ask yourself why absolutely no reloading manuals take 10mm that hot. Then ask yourself why no major ammo manufacturer makes 10mm to hit those velocities. Guys tend to call it watered down or made for recoil sensitive shooters, but considering they tend to make ammo as hot as possible (because it sells) does it make any sense that they water down one cartridge and no others like .44 mag, .41 mag, .300 win mag, etc.?


Of course it can be done... doesn't mean you should. The original Norma ammo that everyone covets and tries to copy was overpressure. Plain and simple. Approach it with some common sense.

Let the flaming begin.

To better answer your original question, are you loading on a progressive, or are you weighing each charge? I'd say 800X, but it doesn't meter well.

[Jherexx]

To better answer your original question, are you loading on a progressive, or are you weighing each charge? I'd say 800X, but it doesn't meter well.

I planned on weighing each charge, I usually do when loading to max pressures. I did think long and hard after doing research if I should go down this road before I started buying components, and I decided I would just buy the ammo from Underwood once they have it back in stock.

My original intent for getting the G20sf was to use it as a pack gun, lighter than a 44mag, higher capacity, with ammo that can be loaded approaching 41mag capabilities that can be used to take deer size game.


After thinking how much time and effort it would take me to load develop ammo that is already available on the market, and since I won't be doing any volume shooting with this handgun, I decided just to buy the ammo off the shelf.

[rondog]

There's a thread running on The High Road from some guy that loaded 10mm with Win296 and was asking about it. And the wagging fingers came from every direction! Needless to say, Win296/H110 is NOT recommended for 10mm. Just thought I'd mention it.

[Rabid]

First, stop and ask yourself why absolutely no reloading manuals take 10mm that hot. Then ask yourself why no major ammo manufacturer makes 10mm to hit those velocities. Guys tend to call it watered down or made for recoil sensitive shooters, but considering they tend to make ammo as hot as possible (because it sells) does it make any sense that they water down one cartridge and no others like .44 mag, .41 mag, .300 win mag, etc.?


Of course it can be done... doesn't mean you should. The original Norma ammo that everyone covets and tries to copy was overpressure. Plain and simple. Approach it with some common sense.

Let the flaming begin.

To better answer your original question, are you loading on a progressive, or are you weighing each charge? I'd say 800X, but it doesn't meter well.

Many reloading manuals get maxed out around those speeds with the right powder and yes the factory loads really are watered down to what the FBI wanted out of the 10mm. The original loads that Norma produced for the Bren Ten were 200gr moving at 1200 fps and a 170gr moving at 1400 fps. The FBI adopted the 10mm but decided this was too much and wanted them down loaded and factory ammo for the public went down the same path to lower velocities. Now federal hydra-shok 180gr at 1030 fps, Remington UMC 180gr at 1150 fps and Winchester silver tip 175gr at 1290 is what you can get today. The FBI switched to the new, at that time, 40sw cartridge that was based off of the 10mm because it could do what they wanted in a smaller framed gun. Not flaming just giving you the history of why it is watered down. The boutique ammo that that hits near the original Norma velocities are so popular because that is what the 10mm was meant to do and stays with in the SAAMI specs.

[spqrzilla]

I don't think trying to make the 10mm Auto into a .41 Magnum is going to be successful, I'm with Zombie Steve.

[Hoser]

Longshot will get you the closest, but it is going to suck to shoot.

Longshot meters like water. I use it in my 28 gauge. I bet I have burned 40+ pounds of it over the years.

[Zombie Steve]

Lane Simpson claims in his book on custom 1911's that the original Norma loads were 44,000 cup. Feel free to beat the crap out of your gun if you want.


And what reloading manual is showing this data? Not Lyman, Speer, Hornady or Sierra. Everyone used to point to one load on the VV site to justify this stuff, but even they've changed their data.

I know I'm kicking water uphill trying to convince 10mm guys that they are being silly. They've invested so much and convinced themselves of the way it should be. Pretty much monkey see, monkey do.

[Shake]

[Rabid]

Lane Simpson claims in his book on custom 1911's that the original Norma loads were 44,000 cup. Feel free to beat the crap out of your gun if you want.


And what reloading manual is showing this data? Not Lyman, Speer, Hornady or Sierra. Everyone used to point to one load on the VV site to justify this stuff, but even they've changed their data.

I know I'm kicking water uphill trying to convince 10mm guys that they are being silly. They've invested so much and convinced themselves of the way it should be. Pretty much monkey see, monkey do.

[Shake]
http://www.alliantpowder.com/reloaders/RecipePrint.aspx?gtypeid=1&weight=180&shellid=30&bulletid=42&bdid=127
The worlds smallest violin is playing just for you and your dilemma [BooHoo]

[Zombie Steve]

The worlds smallest violin is playing just for you and your dilemma [BooHoo]

[Coffee]

[obawon]

Nobody has mentioned Blue Dot which I really like for full power (and no I do NOT mean overpowered!) 10mm loads. I have heard some poo poo Blue Dot for potential pressure spikes in extreme cold weather. I'm not convinced there is much to this in real-world conditions and I'm not convinced that Dlue Dot is any different from any other similar double base flake powder in this regard, but I figured I'd mention since I am recommending Blue Dot. I will continue to load it in the 10, I think it's a great powder for that cartridge! I second the reccos for Power Pistol too, nice powder for the 10...hhave had nice results with Universal for cast loads at 40 SW plinking velocity. YMMV


The 10 is great! Load and shoot!