ASYM 185 45 jhp

Anybody know what powder they use, they list these as power factor 148 and 750 fps from a 5'' barrel. They are always sold out, looking to get a  close clone to practice with.

I thought that was the Zins loading  using VihtaVouri powder. 310

http://www.vihtavuori.com/en/reloading-data/handgun-reloading/-45-acp.html

james r chapman wrote:I thought that was the Zins loading  using VihtaVouri powder. 310

http://www.vihtavuori.com/en/reloading-data/handgun-reloading/-45-acp.html

The stuff Dr.death was selling with Zins name on it, was a big mess up, he didn't know how to load and would ship rounds that wouldn't cycle the gun,

I doubt they use 310, too expensive and hard to get, Atlanta arms powder looks like WST and its almost as accurate... anybody loading zero or nosler 185 fmj-hp with it???

DavidR wrote:

james r chapman wrote:I thought that was the Zins loading  using VihtaVouri powder. 310

http://www.vihtavuori.com/en/reloading-data/handgun-reloading/-45-acp.html

The stuff Dr.death was selling with Zins name on it, was a big mess up, he didn't know how to load and would ship rounds that wouldn't cycle the gun,

I doubt they use 310, too expensive and hard to get, Atlanta arms powder looks like WST and its almost as accurate... anybody loading zero or nosler 185 fmj-hp with it???

Brian told me it was a blended VihtaVouri powder.  Yes, it was soft, but it worked great in my Curtis built gun.

It did work in some guns but the problem most had was it was being shipped in two different loads, it was a mistake when it first happened, I received two cases, one soft one hotter then he ( the Dr.)told everyone that it was one case for short line and one for long. Wasn't long after Zins left and Dr.nick stopped selling it

http://www.rozedist.com/mm5/merchant.mvc?Screen=PROD&Store_Code=RZD&Product_Code=R723-A&Category_Code=ZBA-45ACP

What I would get if I was going to shoot factory ammo.

I talked to Stan Chen a few years ago about the ASYM ammo and he said the whole reason he started loading his own was because he couldn't find anything on the market that was reliably accurate enough to test the guns he was building.

He said that the loading setups he was using for ASYM were anchored so solid that he could get way more torque than anybody could hope to get with a home reloading setup.

Not sure what torque has to do with it, I didn't go into great detail with him about it, but my assumption was that he was just getting tighter tolerances on everything, leading to much more consistent ammo, round-to-round and lot-to-lot. 

In fact, the call came about because I wanted to order more of a specific lot that tested well in one of my guns (based on my experience testing .22LR ammo, where lot-to-lot variability is greater than brand-to-brand variability), and his response was essentially, "Don't worry about lot-to-lot variability."

My own testing has borne this out.

That said, he sold the ammo business 6 months or a year ago, and I have not tried any of the ASYM since the company has come under new ownership.

So this is a long-winded way of saying that I don't think ASYM's accuracy is due to some special magic powder blend, but rather to overall consistency in the manufacturing process that I cannot replicate at home.

I would think that a lot of the accuracy has to do with the type powder used. Quite a few years ago when Red Box Federal was the best in 45ACP and the standard by how ammo was compared and accurate loads were stated as being almost as good as Federal.
 Federal brass was available and compared to loaded ammo was the same, Primed Federal Bass was also available and tested to be as supplied in loaded ammo. Powder was the secret and not available. Many tried to determine what is was but it was s guarded secret and was specially made for Federal only. I had friends of mine remove the power from loaded ammo, put in other cases with another primer and get great results. So there is a lot to say about Powder type.
 I have another friend that spends quite a bit of time checking powders to determine the most accurate and he tells me the best book is the Nosler manual, and it lists A10 as the best for the 185 JHP. I assumed it to be Accurate 10 but not sure if there is A10. Supposedly local shop has A10 so I'll get some as I just ordered 2000 185 JHP Zero bullets. I'm trying to find out what Atlanta Arms is using for powder.

nosler's online load data list AA #5 as the most accurate for the 185gr HP. it lists 8.6 gr of AA#5 for a velocity of 804...

#5 is pretty close to WST and X700 as far as burn rate

http://www.nosler.com/nosler-load-data/45-auto-acp/

I find there data on hp38 and 231 and #2 interesting.

Thanks John for the post I did not know the ASYM was now in the hands of someone else. As to other match grade in many hours of research back 10 years ago I found talking to the tech people at federal, the use a blended powder that is not available to the public or that's the story.

DavidR wrote:Anybody know what powder they use, they list these as power factor 148 and 750 fps from a 5'' barrel. They are always sold out, looking to get a  close clone to practice with.

Hello DavidR,

ASYM originally used a bulk/blend "equivalent" to Vihta Vuori - N310.  Ammunition manufacturers do not load to a specific powder weight; they load to a specific velocity that meets certain pressure requirements.  Testing provides the actual load for each lot of bulk powder that they purchase.  Consequently; the powder quantity with vary over time.

The bottom line; the velocity goal for this load is 775 - 780 feet per second, not 750, and can be typically achieved with 4.2 to 4.4 grains of Vihta Vuori - N310.

Jim