So I'm an experienced shooter and reloader, but a noob on black powder... (so new, i haven't yet bought a BP firearm or powder...)

My question is on the powder.... is all 3fG the same, or do different brands have different characteristics..?

If I was reloading .38, I could pick 20+ different powders and they'd all be slightly different min and max loads, densities, and characteristics...

But is Henry Kranks 3fG the same as Swiss 3fG..?? (they're the only brands I've seen discussed here in the Uk.. and Goex(?) in the US.)

...And are guns powder fussy..?? some will work better with HK's, others are more accurate with Swiss..?

TIA

Daryll.