My answer to that need was to get a Ruger 77/357 and taper crimp 9mm bullets into .357 magnum cases. Despite .002 or so nominal bullet diameter difference it shot them as well as the lighter .357 bullets shot.
Tom
Or just shoot .38 Specials out of it. They feed fine in my 77/357 and are very mild in recoil and report. .38's can be bought for around the same price as 9mm's, I think.
