My best target load for my Uberti 45/70 Hi Wall is 13 grs of Unique under the Lee 405 gr hollow base boolit using a tuft of dacron fiber over the powder, but I'm out of Unique and have Herco and Blue Dot on hand. As they're both slower than Unique, I was wonderin if they would be good powders for the 45/70 ? Anyone have tried and true loads with these powders that they can recommend?