AA#9 or Win 296 powder for 357mags


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Wildbillz
November 5, 2011, 07:46 AM
Hi Guys
Any reason to prefer one over the other?

I may have the win # wrong?

WB

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buck460XVR
November 5, 2011, 08:49 AM
For full power loads, in my guns, I prefer W296/H110.

GP100man
November 5, 2011, 08:59 AM
I thought it was a ?? on WW296/H-110

In my exp AA#9 gets spiky pressures sooner than 296/H-110

rg1
November 5, 2011, 09:31 AM
I've been satisfied with both. My favorite load is AA#9 at 13.0 grains with Hornady 158 XTP's using a standard CCI 500 primer. AA in their #1 manual tested with standard not magnum primers. Later data used magnum primers. With Win 296 only magnum primers are recommended. Both are good powders for high level .357 Magnum.

RhinoDefense
November 5, 2011, 11:17 AM
GP100man, they are identical powders.

W296/H110 was developed for factory 357 Magnum ammunition. #9 performs well too as does Blue Dot. W231/HP38, HS6, Unique, #5 perform well for medium loads.

hdbiker
November 5, 2011, 11:20 AM
be carefull with BlueDot and 125 grain bullets,not recomended. biker

gamestalker
November 5, 2011, 01:15 PM
I personally prefer H110/296 and have been loading my magnum handguns with them for many years. Just be sure to use a good roll crimp or you'll very likely have some bullets jumping out of the case mouths. Other than that, your good to go.

billyjoe
November 5, 2011, 01:19 PM
I use w296 in all my .357 magnum full power loads. Works great and very accurate in most guns. Never tried AA#9. Guess maybe i should get a pound and give it a try but w296 just does so well i don't realy wanna change.

Steve C
November 5, 2011, 02:27 PM
AA9 is a bit faster burning and more flexible than H110/W296. It is not volume sensitive and can be loaded down as well as full bore without producing squibs that you can get if you reduce more than 3% from maximum with W296 or H110. You use 15% to 20% less AA9 than you will W296/H110 per load with equal velocities so its more economical. It is a very fine grain powder and how well it meters (or leaks) from your measure depends upon your measure. I much prefer AA9 with cast bullets than W296/H110.

W296/H110 may eke out an extra 3 to 4% more velocity at top loads than AA9. These powders produce good accuracy with very consistent velocities with low standard deviations in my experience. They also produce more flash and bang in a load than AA9 which may be a + or - depending upon your preferences.

I keep both in my powder stock.

Blue68f100
November 5, 2011, 03:08 PM
I have been using 296 since 1977, so no need to change. You must use a Mag primer with the 296 and a heavy crimp for this powder to preform.

BullfrogKen
November 5, 2011, 03:20 PM
I've used both, and I prefer AA #9 for the reasons stated above.

2zulu1
November 5, 2011, 06:32 PM
I also prefer AA #9 over H110/W296 for the same reasons as stated above, especially when loading 125gr jacketed bullets.

gamestalker
November 5, 2011, 07:30 PM
I consider AA#9 at about the same as 2400. It's a good powder for what it intended to do. But for a all out full house magnum loads, H110 and 296 get it done better than any other powder on the market.

SlamFire1
November 5, 2011, 09:03 PM
I would prefer AA#9 as you can reduce the loads by a bit. W296/H110 according to the manufacturer's warning, must be full power and you cannot cut the loads.

Either powder provides excellent accuracy and plenty of power.

I did find that my AA#9 loads did not like cold weather. I had a weak mainspring in a M585 S&W and I got squibs in 30-40 ish weather. Replacing the mainspring and shooting in 50ish weather everything worked out OK. But I believe these ball powders are better served with magnum primers, something I have not tested, or will even bother with.

My favorite is 2400. More flexible than either AA#9 or H110 and produces excellent accuracy with plenty power.





M27 S&W 6.5 " barrel

158 JHP (W/W) 13.5 grains 2400 R-P cases WSP
5-Aug-06 T = 103 F
Ave Vel = 1196
Std Dev = 26.58
ES = 87.17
High = 1244
Low = 1157
N = 10

accurate



158 LSWC Linotype 15.5 W296 3D Cases CCI500

14 Oct 2008 T = 80 F

Ave Vel = 1260
Std Dev = 34
ES = 160.5
High = 1315
Low = 1154
N = 18


158 LSWC Linotype 12.0 AA#9 Mixed cases CCI500

14 Oct 2008 T = 80 F

Ave Vel = 1217
Std Dev = 52
ES = 224.9
High = 1346
Low = 1121
N = 29
http://img.photobucket.com/albums/v479/SlamFire/Smith%20and%20Wesson%20Pistols/ReducedM27-2N3666881970rightsidecoc.jpg

ArchAngelCD
November 5, 2011, 10:34 PM
I'm happy with W296 for full power .357 Magnum loads. Nothing wrong with AA#9 or 2400 for .357's either especially if you want to download your ammo at times. They all have their place.

GP100man
November 6, 2011, 01:14 AM
Yep ,WW296 & H-110 has been the same powder for a number of yrs , but AA powders are imported are`nt they ????


http://www.accuratepowder.com/


Nope ,probably the only USA powder manufacturer!

Wildbillz
November 6, 2011, 05:31 AM
Thanks Guys
I came into a couple of pounds of each in a deal several months back. I was hopping to be able to load up 357mags and 44mags with them. I will have to pickup some JHP bullets and see how they do.

WB

41 Mag
November 7, 2011, 05:36 AM
You won't be unhappy with either, just depends on exactly what your load results are to be.

I, like most have used them both, in everything from the 30 Carbine through my 454, they have worked just fine for the loads I worked up. I was using the AA powders years ago when they were considerably cheaper than the others. Nowadays I use #5 and 9 when I want to creep up on a accuracy load. I use the 110/296 when I want all I can get.

Wildbillz
November 7, 2011, 06:09 AM
41 mag
Which one did you use to do M1 carbine? I hadn't even thought of that. Were you shooting it out of a pistol or a rifle?

Thanks
WB

BBDartCA
November 7, 2011, 10:02 AM
I've had great luck with #9 with 357. But at first did not - lots of unburnt powder. Then I read the AA literature more closely and noticed repeated comments about using a heavy crimp. This fixed the unburnt powder issue.

USSR
November 7, 2011, 10:32 AM
I would prefer AA#9 as you can reduce the loads by a bit. W296/H110 according to the manufacturer's warning, must be full power and you cannot cut the loads.

+1. I will not use W296/H110 due to it's inflexibility. I use 2400 and IMR4227 for my .357, 45 Colt and .30 Carbine loads.

Don

spencerhut
November 7, 2011, 10:52 AM
I also use 2400 for my .30 Carbine and .357 Magnum full power loads. Not really a big magnum shooter, but it is fun now and then to cook off a few 1300FPS loads. :evil:

https://lh6.googleusercontent.com/-ubrEctJRbng/TralK4eYVjI/AAAAAAAAJb4/YgeLyGHwoEI/s144/IMG_20111106_070601.jpg

evan price
November 8, 2011, 01:26 AM
I much prefer #9 because it is more versatile and friendly to use. I may try some 2400 soon because Alliant is on sale locally.

41 Mag
November 8, 2011, 05:24 AM
41 mag
Which one did you use to do M1 carbine? I hadn't even thought of that. Were you shooting it out of a pistol or a rifle?

Thanks
WB

I have used 2400, 110/296, and AA-9 in my 30 Carbine loads over the years. Pop's standard was 16grs of 2400 way back when, with a 110gr RN. I have played with several other bullets over the years in both the M1 and my Ruger, and tried to settle on one load for both. Still playing with them on occasion, but for the most part I have stuck with around 15grs of Hercules 2400 across the board with them both. Just easier to remember, and shoots well in either. I haven't played with the newer Alliant 2400 yet but understand it is a tad faster, but that could also be that mine is old as well.

The others also shoot very well but are a bit more finiky in my old M1's. Now in the Ruger they rock and roll, but you either have one or the other, fire balls or muzzle blast. I just picked up a couple of .308 molds to try out some home cast in the Ruger so hopefully I can find something else to play around with.

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