"the barrel would not have the .38 Special dimensions so it would probably not be very accurate with those cartridges."
I thought that all of the Colt revolvers made after 1890 used the modern-style bullet with a hollow base, dispending with the old-style heeled bullet, and that as earlier guns were refurbed, the barrel was replaced with one with modern dimensions.
I know the early Navy .38 Long Colt cartridges were heeled, but again, I thought that had been stopped by the early 1890s.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.