Fast rifle powders in .357 for carbines?

Except Lil'gun, there doesn't seem to be any data for rifle loads in the .357 using the very fast rifle powders like AA1680, IMR4198 or Reloader 7. (I know, Lil'gun is a shotgun powder. ) Is the case just too small to take advantage of these, or does it not work for some other reason I don't understand? Or have they just not bothered to work up something that would not be suitable for barrels under a foot long?

In Lyman 49, they have pistol and rifle data pages for .32-20 in which pistol uses all the usual suspects (Unique, 231, #5), and the rifle data uses mostly the rifle powders I've listed. Pressure is still the 16,000 limit in both cases, so the difference is not that the rifle loads are higher pressure for sturdier guns. The .32-20 case has a very slight bottleneck. It's so minimal, you might not even notice it in a glance at a dirty case. I know diddly about internal ballistics, so I don't know if this tips the case volume to bore volume ratio just enough to make the rifle powders work in a way that they wouldn't in the straight-walled cartridges, or what.

I'm guessing that if this could work in .357 (or .44), I'd have run across it by now, but correct me if I'm wrong.

I don't see 1680 under .357 Magnum. I think you may be looking at the .357 Maximum table.

I've made that same mistake at least a couple of times over the last few months. I look at the numbers and get all excited, then I realize that's not the magnum.

Those are not handguns. They are heavy carbines that have lost their stocks.

I've seen the data for 300-MP, but it never seems to get mentioned in actual use here. Has anyone seen that stuff loose in the wild? I asked at the LGS, and they acted like they'd never heard of it.