Hello all I have a original Ruger Bisley Vaquero it's the larger frame not the New Model. It's a .357 magnum with a 5-1/2 inch barrel in stainless steel. My question is I have seen Ruger Blackhawks in .357/.38 special that also have a extra cylinder in 9mm. It's it possible to get a cylinder in 9 mm that would work in my Ruger Bisley Vaquero? Thanks in advance!!