Breechplug makers have always lagged behind the "newest/bestest" powder. When Pyrodex was king, pretty much any breechplug would work. Then 777 came out and we had the infamous "crud ring". Breechplug makers went to work and designed a plug more compatible with less "fire in the hole". Then BH 209 comes out and they have to machine something totally different to increase the fire.

So it is pointless to run down another gun/breechplug because it doesn't shoot this or that powder well. They are all designed to do well for their special purpose and you can't compare apples to oranges.

Not sure what that has to do with weathershield coating, but of course, for those that have seen The Jerk, you know what the real "special purpose" is!