What Powder for Full Power 10mm Loads

[Bama Drifter]

800-X is more like irregular tortilla chips, Unique is corn flakes.
To answer OP: Power Pistol.

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[JohnnyFlake]

Finding Powder is a bit of a problem here in Southern Nevada. Well, not all powders, but Longshot, AA7, AA9, Power pistol and Blue Dot sure are! I have plenty of powders for mid-range loads, so I'll just have to be patient until one of the shops around here get some Longshot, Blue Dot or AA9 to work up some top end 10mm loads.

 

[Buck13]

I have an Accurate manual from the mid-90's that lists 13.5 grains of #9 with a 200 grain bullet. Good luck finding that load listed anywhere today.

I seem to remember hearing that the AA# powders have changed manufacturers something like three times, including at least one change of country of origin. I would be particularly concerned about using very old data for a powder that was known not to be coming from the same factory.

"Golf Delta Lawyers!!1!" is not the only reason data may be revised. (Not saying Elkins45 is saying that, just that it's a common explanation.) There's also piezo data scaring the engineers, changes in powder with the name kept the same for marketing purposes, and probably other reasons I don't know about.

 

[Elkins45]

I have read that "old" #9 from Iseral is slower than "new" #9 from wherever it's being made now. I will soon be running out of my old stock of old #9 so I guess I will be finding out.

 

[JohnnyFlake]

Well, I finally ended my search for powder to build some high-end 10mm rounds. I really did not want to order online, as I only wanted a pound, maybe two to work with. After searching locally, I finally did find some Longshot and AA#9, but the prices are unreal. $34 for a pound of powder, is simply gouging and that seems to be the norm now days with all the B&Ms. I simply gave in and ordered online again, placing an order for 4lbs of Longshot and 4lbs of 700X, as well as a few thousand primers, all to off set the Haz cost. I have lot's and lot's, of a few other powders, so I should be good for a very long time!

Actually, it's all good, as no one knows for sure what's going to happen in November and a win for Clinton, is a BIG LOSS for us! Who knows what will be available, a few months after the election.