Recently fired an .44 Uberti 1858 New Army, fun but messy. I found that pure Crisco over the loaded chambers wasn't the greatest to use as it seemed to melt too easily. Might try mixing with beeswax next time.
I earlier alluded to the "difference of opinion" regarding the choice and placement of lube. There are the two methods:
#1. Tamp bullet directly over powder and smear grease atop the bullet over the loaded chambers.
or
#2. Place a lube-cookie or lubricated wad between powder and bullet and then tamp bullet.
The reason given (especially in older books and magazines) for using method #1 is that the grease seals the front of the chamber and prevents chain-fires,
i.e. the flame from the shot supposedly penetrates past the bullet of an unfired chamber and sets off the powder, However, the more up-to-date references seem to discredit this. The blast from the first couple of shots blows out much of the grease from the other chambers, anyway, so there's goes any protection. And you end up with grease all over the gun in places where it's not doing any good. Also, there is evidence that chain fires can occur if/when a cap comes off a loaded chamber, and the flame from one shot enters that chamber from the nipple end. So the grease over the loaded cylinder is messy and doesn't necessarily do what it's advertised to do.
Method #2 is advocated by people who've done a lot of shooting using method #1 and finally decided there had to be a better way.
One needs to understand the primary purpose of the lubrication, which is
not to prevent chain-fires. It is not that, nor is it to prevent leading. It is to keep the fouling soft. Hence the warning against using petroleum-based grease - it doesn't soften the fouling, quite the opposite

Thus it makes more sense to put the lubricant where it will have maximum effect, i.e. next to the powder.
In my own experience, it's easier to load and clean up.
Chain fires are prevently more effectively by
- choosing tight-fitting caps that won't drop off before firing.
- using bullets or balls that are just slightly oversize, so that they are either swaged or shaved when pushed into the chamber, which will seal off the front of the chambers (and also prevent balls from slipping forward and creating the dreaded air-space.)
I won't debate anyone who insists on using Method #1. Try different methods and make your own decision. And have fun doing it!