Originally Posted by S&WIowegan

I won't try to comment on accuracy of H110 vs 2400 but I use both. Best results with H110 require "maximum" loads to burn clean and effectively. Also, H110 needs magnum primers to burn fully. If you're not really interested in top-end loads, don't use H110/296(same powder).

It's true 2400 doesn't "require" magnum primers but it also performs best with full loads. If you are after medium loads use a "medium" powder.

Dirtyness is a function of the powder being fully burned or not.