"fastening obsidian axe heads to sticks with jungle vines"
If I remember that far back, I always used animal hide and ligaments to do that....
230 was replaced with 231 and as soon as I ran out of 230, that didn't take long I was shooting PPC competition and had to provide my own practice rounds, I had to switch to the 'NEW' 231. There wasn't all that much difference in the two. I had gotten a real deal on Olin 630, 36 pounds total and was using in in my .44 Mags for heavy stuff. I still have most of an 8 pound can of it. Using it more now in my .300 BlackOut loads.
More to the point of the original post. I like 2400 in my heavy-er .44 loads but I don't see why it couldn't be backed off a bunch to make light loads. I've never done it, so this is only speculation on my part. It is very versatile in the .300 BlackOut lead loadings, so just maybe.