+1 on what Bearcat posted.
2400 doesn't need a mag primer. H110/296 does, according to ES measured with my chronograph. CCI350s are my fav. Always run H110/296 close to or at max - just runs better.
There are a a number of high performance powders if you want reall 44mag loads. And 44mag can be downloaded to metro-man levels easily too by using relic powders like Unique.
