[knight0334]

As stated above, more than likely it was pressure/powder flash.

Mis-indexing does happen in revolvers, but seeing how that Ruger is new - I'd doubt it.

About the 45LC v 44 ball - 44 cap & ball is actually 45cal. Those conversion things do some weird forcing cone tricks. Some have the 45LC cartridge at an angle when compared to the bore.

The shaving thing - depends on the oversize of the ball. My .44 1851 Navy swages to a .4501" chamber and bore. I use .454" round balls that leave that shaving. .452" balls will do the same, just thinner shavings.