I use a 38sp, S&W 637 airwieght. .357 mag is the best out of the three, but 38spl+ is BA. Plenty of power.
I plan on getting these for it.
http://www.sgammo.com/product/winchester/50rds-ranger-38-special-p-130-grain-bonded-hollow-point
I love how people arnt even discussing what the OP wants. 357 sig is ok but no point (some 9mm +p+ loads will meet or exceed most 357 sig, while having cheap plinking available). 40 is another that has nothing really over 9mm except losing capacity. 40 is similar cost to 38 spl but cheaper than 357 mag. But 357 mag gun can shoot 38spl.
I plan on getting these for it.
http://www.sgammo.com/product/winchester/50rds-ranger-38-special-p-130-grain-bonded-hollow-point
I love how people arnt even discussing what the OP wants. 357 sig is ok but no point (some 9mm +p+ loads will meet or exceed most 357 sig, while having cheap plinking available). 40 is another that has nothing really over 9mm except losing capacity. 40 is similar cost to 38 spl but cheaper than 357 mag. But 357 mag gun can shoot 38spl.