2400 is THE original magnum handgun powder and is the standard others are judged against. There are many, many more powders for magnum loads today and some of them are outstanding, none though are really better than 2400. Good choice.

The only real difference in 2400 from then until now are just like any other powder, no more than lot to lot. That is the reason some of us harp on working loads back up when you change any one component. Make sure you do the same when starting out, start low and work up.

Oh, yaah, have fun too!