I'm a fan of the Black Diamond XR. I've got the black diamond, as do both of my sons. No problems to report, lots of fun to be had.

FYI, all three of ours like this load, and it's good for deer & elk:
120 grains Pyrodex select
400 Grain Harvester bullet (with sabot).

You can get the Harvesters at www.claybusterwads.com.
Of course, only the pure lead ones are legal for hunting in Wa, but they have proven deadly on elk for us.

The two bulls in my Avatar, as well as many cows were taken with my Firehawk (predecessor to Black Diamond - same workings) and the above load.

P.S. I drew a Rimrock Bull (muzleloader) tag
:-)

P.P.S. I drew a MOOSE tag (antlerless only)
:-)