The powder itself.... BH is an excellent powder. It works as well as advertised.

The problem is that guns were never designed to shoot the powder in a long term manner.

Knight at this time is and with their new releases is the only company that has made the strides to offer a BH compatible Breech PLug.

Other companies are working to get it done but with all the differenct theories out there they may be having a hard time deciding what the best design might be.

I am personally biased but i am not sure that Western can even supply the best guidance for the different rifles.