[Colt75]

I use Bullseye because it burns faster thus increasing the flare of the hollow base of the bullet that seals the bore and grabs the rifling. Unique may be too slow a powder to do this. Blackpowder would probably work better than Bullseye but I don't want the cleanup hassles.

 

[Colt75]

Here is a good article on reloading the old .41 L. Colt. Lots of good information.

www.harryo.sixshootercommunity.org