I do not have a 357/9mm convertible, but FWIW...
my 45colt/45acp convertible is equally accurate (meaning very accurate) with either type of ammunition. I feel that there are the technical details, such as barrel width or the "longer jump" from the shorter ammo to the forcing cone, and there are real life results, which for most shooters don't seem to be noticeable.
my 45colt/45acp convertible is equally accurate (meaning very accurate) with either type of ammunition. I feel that there are the technical details, such as barrel width or the "longer jump" from the shorter ammo to the forcing cone, and there are real life results, which for most shooters don't seem to be noticeable.