Hello. I just aquired a Trail Gun Armory Kodiak Double rifle in 45/70. In all the searches on the net it appers that they like 405 grain bullets the best. I need to decide between the Lee 457-405 and the Lee .459-405HB. (I have read that the HB can be difficult to cast.) Any one useing either mold or shooting this gun I would appreciate your opinions. I will ONLY be useing black powder in this rifle....Thanks, Ed