I guess maybe I should have given the Lyman loads from the book so I could presume the liability for any accident that might occur that you seem to want to assign me.Yes they do. Usually Curtis and Harvey powder. Do you know how 1970 Curtis and Harvey powder compared to today's Swiss or Goex? They also were putting 180 grains of powder in some 50 caliber rifles. All those revolver shots were made with steel frame guns from machine rests IIRC Big difference between pushing the envelope in a laboratory with a remote firing device or in the real world held in the human hand. And as the Duke often said in his movies shortly before some mishap, "but you go ahead and do what you think is best." I have seen cracked/ruptured cylinders. Can you guarantee the OP that his 1849 revolver is made as well and with as good a metal as the guns used by Lyman. Or is the 1849, some FIE revolver put together from an Old Dixie kit with unknown metallurgy and chamber wall thickness. I would be less alarmed about it if the gun was a steel frame 1858 remington reproduction with a 36 caliber. Most of them had quite heavy chamber walls. I had a 1862 Uberti Police and the fluted chamber walls might have been 3/32nd ie not much steel for a 36 caliber.
At least I knew the op was asking about a pistol not a rifle main charge.