I realize this thread is older than dirt, but I was drawn here because Mangosteen gave me a like; and maybe others will be drawn for who knows why. I'm running my mouth here/now to confirm the original load was a 146 grain round nose bullet over 20 grains of fff black----the gallery load was a 70 grain round ball over 6 grains of fff black.

As an aside, I'll tell you the NM #3 is among all the rest of the large frame top-break revolvers (and any small/medium frame top-breaks made before about WWI) to appear on Dave Chicoine's Never Use Smokeless List. (In the event you are not familiar with Mr. Chicoine, suffice it to say he's forgotten more about all this stuff than you or I know------and will ever know!!)

Ralph Tremaine