Optimum powder for 10mm

[Ccctennis]

I am going to use my new black and blue powder coated 180grain pills in my glock 20 gen4. I looked through all my manuals and online manuals and have some options. What does everyone here run there 10mm with?

Powders on hand:
Bullseye, power pistol, aa5,7,9, hp-38, clays, h110, wsf, wst, titegroup
Hs-6

I see some People like accurate 7 and some like hs-6. I'm at the beginning stages of load development for this new gun so I will start at the bottom and work my way up. Since my pills are powder coated I can push them beyond basic lead velocities. What say you???

 

[LeonCarr]

AA#7 if you can find it.

Just my .02,
LeonCarr

 

[Ccctennis]

Got it

I have aa7 on hand no problem!!!!

 

[Wreck-n-Crew]

I am about to work up some loads using power pistol and unique for 10mm. I have tonnes of 10mm data for PP. I also hear good things about PP in 10mm. We will see how it goes. Data from Lyman 49th has them moving pretty good (around 1250 for the 175gr cast LSWC). However the coated bullets act more like plated or FMJ's. Be interesting to know how the velocity ends up compared to regular cast.

 

[Ccctennis]

I have power pistol but the problem is the ALLIANT website only list one recipe and that is with a 165 grain bullet. I have 180 grains. I will have to check all my manuals in the morning and see if they something with power pistol!

 

[nastynatesfish]

My favorite was rl2400

 

[41 Mag]

I use AA-9 for everything 180gr and up.

That said though, so far I haven't loaded any cast for mine just yet. I am on a couple of group buys for molds and when they come in I will go for it.

I have tested plain base bullets of around a 10-12BHN out of my 41 recently over charges of AA-9 ranging from 14 to 16grs. I used both coated and plain lubed with Carnuba Red with equally great results. I do not think I will have any issues running this same alloy through my 10mm using the same powder.

 

[PCFlorida]

Power Pistol is great for 10mm, mild and hot loads. My range load for targets is 6.5g and I have taken it up to 8.5 with no over pressure signs. Handloads.com shows 8.7 for a 180 JHP.

Power Pistol also meters extremely well in my Dillon's, I would imagine it does so in others as well.

 

[ATLDave]

AA7 is good for mid-range loads and full loads with lighter bullets. AA9 is a little more optimal for full loads under heavy bullets. 180 is kind of the pivot point where both work well, but for full-bore stuff, most manuals show AA9 getting you a bit more velocity.

I've never explored the upper end of HS6, but I shoot a lot of .40max-in-a-10mm-case loads from it under 180 grain RNFPs. Same with AA7. If you get the pressure too low on AA7, you start getting erratic velocities and some very flashy muzzle blast... nothing close to squibs or anything, just sub-optimal stuff. HS6 seems a little less prone to that, and meters almost as well.

That said, the vast majority of my experience is shooting jacketed or plated stuff. I just don't fool much with raw lead. Too much indoor shooting, plus young kid in the house causes me to want t avoid as much lead exposure as possible.

 

[bltmonty]

I have the best performance from Longshot--accurate, best velocities, with no pressure signs, and forgiving. Power pistol was too dynamic with slight variations in load.

 

[Wil Terry]

AA7 was paramount in every 10MM pistol I ever tested, at least a dozen, with JHP projectiles. AA5 was much better with castlead projectiles.
This included both revolving pistols and autoloading pistols.
And so it goes...

 

[Ccctennis]

I started out with power pistol using my hornday jacketed XTP bullets.

I did ten at 6.9
ten at 7.2
ten at 7.5
I will see how they function and which has the best results. Once i dial that in I will try my accurate powders as well.

 

[GLOOB]

For 180 gr jacketed bullets, I'm using Win Autocomp. With Hodgdon's max data, I'm very slightly "Glocking" my brass in my G20. Cases don't have an obvious bulge, but sized cases can fail chamber check, depending on the orientation of the case. So I had to pull out the bulge buster. And I think slide velocity just might be on the slow side. The slide failed to lock back at least once. Subjectively, recoil is also very light. I have worked up 45ACP loads with more recoil out of a G21.

I plan to shoot some cast in it very soon, using Unique.

Since my pills are powder coated I can push them beyond basic lead velocities. What say you???

I suspect normal cast bullet velocities are plenty high enough for a 180+ grain bullet, let alone PC. I guess I will find out pretty soon.

 

[Wreck-n-Crew]

I started out with power pistol using my hornday jacketed XTP bullets.

I did ten at 6.9
ten at 7.2
ten at 7.5
I will see how they function and which has the best results. Once i dial that in I will try my accurate powders as well.

Sounds good Im itching to know!

For 180 gr jacketed bullets, I'm using Win Autocomp.

I got a lb of that if i need to fall back on.

Interested to see I plan to shoot some cast in it very soon, using Unique.

loading up some 10mm Unique too.

 

[Ex]

The two top powders for 10mm are LongShot and 800X. 800X has the advantage of a fair amount lower case pressure but it doesn't meter worth a darn. LongShot goes like a cannon, burns VERY clean in both my G29 and G20. Can shoot 500-600 rds and the barrel is still pretty clean. This is with JHPs, I don't shoot lead.

Anyhow, LongShot gets my absolute vote. JMHO
Alliant BE-86 would be close to full boat too.

 

[Elkins45]

Of the ones you have I would recommend AA9 and Power Pistol.

 

[jeepmor]

I have power pistol but the problem is the ALLIANT website only list one recipe and that is with a 165 grain bullet. I have 180 grains. I will have to check all my manuals
in the morning and see if they something with power pistol!

This should help.


Image won't latch properly, sorry.
180 grain bullet load data from Loadbooks (loadbooks.com) It's one of the paper copy booklets of every manufacturers load data. Hope this helps.

Hornady data - Power pistol 6.8gn/950fps=min 8.4 gr/1150fps=max
Alliant Data 8.7/1240fps=max 34,900psi

Standard reloading disclaimer applies. Tried to share scan of the page, but it isn't working for me.

 

[Peter M. Eick]

I started on 10mm with AA7 and found after years of use it was a bit fast. Blue dot works but it is also in that range. Just a touch fast for 180 grn lead and JHP's. AA9 on the other hand is a bit slow. Great for 357SIG but a bit slow for 10mm. Also AA powders seem over the years to have lot to lot variations more than others so other then AA9 for 357SIG I tend to avoid them.

Today I would say the best powder for the 10mm is 800x. Near perfect speed for 180's and 200 grn lead and jacketeds. Yes it meters like beans, but its accurate, near perfect speed, hard to double charge and easy to work with. Yes today I would say 800x is perfect.

 

[Elkins45]

^^^ I just can't forgive the terrible metering inconsistency, even though the burn rate is nearly perfect. I would rather burn a little extra #9 because it meters so well.

 

[Peter M. Eick]

800x is not that bad. It just takes technique. With my well worn in Uniflow, using a full measure and a baffle, the small micrometer will generally throw +/- 0.1 at most 0.2. Good enough for 800x as I don't see much difference in carefully weighed charges and thrown charges on the target.

I know I liked it enough I bought an 8 lb jug of 800x just for my 10mm's.

 

[jl1288]

Good morning Gents,
In my load development work with the 10mm I favor longshot and 800 also.
I took apart some ammo I bought from an online "boutique" ammo company, and found their hot 10mm load was .2 over book max with 800X. I worked up my load till I matched their load and it is stout. They use a 180gr gold dot bullet which I don't personally believe is meant for the velocities this load can achieve so I used the 180gr nosler jhp. The accuracy nod however goes to the longshot load if I recall correctly it was 9.Xgr with the nosler 180gr jhp. One more thing to consider with the glock is the recoil spring assembly, when I worked up these loads I went with a 24lb RSA and didn't bulge my brass as much as the factory RSA. My hypothesis on this is the factory in the name of reliability uses a relatively light spring weight allowing the slide and barrel to unlock while there is still very high pressure in the chamber. I also use a 20lb RSA in my G23 when I work up loads for it. BTW these are both 3rd gen G23, G20.

 

[Ex]

Good morning Gents,
In my load development work with the 10mm I favor longshot and 800 also.
I took apart some ammo I bought from an online "boutique" ammo company, and found their hot 10mm load was .2 over book max with 800X. I worked up my load till I matched their load and it is stout. They use a 180gr gold dot bullet which I don't personally believe is meant for the velocities this load can achieve so I used the 180gr nosler jhp. The accuracy nod however goes to the longshot load if I recall correctly it was 9.Xgr with the nosler 180gr jhp. One more thing to consider with the glock is the recoil spring assembly, when I worked up these loads I went with a 24lb RSA and didn't bulge my brass as much as the factory RSA. My hypothesis on this is the factory in the name of reliability uses a relatively light spring weight allowing the slide and barrel to unlock while there is still very high pressure in the chamber. I also use a 20lb RSA in my G23 when I work up loads for it. BTW these are both 3rd gen G23, G20.

Great theory on the RSA fl1288! Springs are cheap, I may have to try that! I know I use a heavier spring in my G22 with warmish .40s, but mostly because I was pitching my brass halfway across the state. That started when I quit using oil and went to td_25 grease with liberal applications. Really like this stuff.
http://www.mil-comm.com/component/virtuemart/weapons%20lubricants%20gun%20care/tw25b%20-%20%20%20light%20grease%20lubricant-protectant?Itemid=194

 

[JonB]

AA7 for me as well.

 

[Match10]

My "Go to" powder has been AA7, and occasionally Blue Dot, in my 10mm for the last 25 years.