Yes, I've heard rumors of a few .44 Mag. Model 58s that were factory produced on special order.
They're like the 9mm Model 19s, the .38 Special Model 586s, etc.
"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.