It's just another flake shotgun powder that ended up being used for pistols when the powder shortage hit. I used to use it for heavy trap loads and it worked well. 700X is also another one that pistol loaders found that would work.

I had lots of American Select after I gave up trap shooting. I tried it in 45 ACP and found it did a great job. Then I tried it in 9mm and it works just fine there also although it fills the small case.

800X has about the same burn rate as Herco and HS-6 (both listed as acceptable for 124gr 9mm loads in the new Hornady manual) so I would think it would be a good substitute if you can meter it.

That sounds like a plus P load and I don't have any data on that. My load for AS is only 4 grns. but it's much faster powder than 800X.

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