As powder is hard to find, and in my town usually totally unavailable, I grabbed a can of Accurate 1680 when I saw it on the shelf of our local store. I have a 7.62x39 that I load for so I figured I'd use it there but hoped there might be wider applications. I don't have hornets or similar size cartridges, do have a 223. But comparing loads in manuals, it seems like this powder might work in cast bullet apps for a variety of cartridges where 4198 and 4227 and similar are used. Why don't I see broader uses? Is it that specialized?
I had thought 1680 was THE powder for the 7.2x39 but even there I see other powders often preferred.
At any rate, hoped others with 1680 experience might be willing to inform me.