[Charybdis]

Would orichalcum ball in a muzzle loader be usable as a projectile  in the Astral?

I don't believe Orichalcum is Dual-Natured (inherently magical? Possibly)... so is an interesting, and incredibly expensive... idea. Be a nice run to get a few Dual-Natured bullets....

What about a Super-Squirt full of FAB-III?

The pistol wouldn't be dual natured, but the FAB-III would... however is there actually any penalty or issue in hitting a target with FAB-III?
GM: You've spat on the spirit...excellent.... now what?

[Grimnahr]

Warwolf I didn't mean to come off as upset lol you are totally cool i just shouldn't post at 3 in the morning after working all day lol its all cool dude

[CanRay]

For old firearms, check out True Grit as to why a Colt Dragoon was the Hand Cannon of it's era.