I think Unique is a pretty good choice, but would have to look awfully hard at 2400. I use a lot of Blue Dot also. BUT, I have loads using Unique in most of my guns. I must say that under most circumstances, there are just 3 cartridges that get 95% of all my use, a Hornet, a 357, a 500 S&W, and I guess I should add a 28 ga. I can use any of the 3 above for any of those.