Have heard mentioned several times that best results are obtained .357 SIG by loading .357" diameter bullets not .355" bullets in handloads. What's recommended and the pros and cons? I am talking primarily FMJ's for range use. Thanks.
One of the better reasons for rolling your own is to get the optimum performance out of YOUR specific gun. The only way to find out is to try various components and loads. You might find the best grouping is by using .355 bullets. Or maybe .357 bullets. That's what experimentation is all about.
It's still going to be a 9mm barrel. The 357sig takes the cartridge of a 40s&w and necks it down to 9x19 bullet. Which is .355. Now, your gun may like heavier or lighter bullets but their diameter will be the same. A 357mag/38spl bullet will be wider. I would be very very careful about using wider bulletsDWalt, agreed. But just trying to get a head start and avoid any unnecessary variables. Also hoping to buy bullets in bulk. Sounds like it is not worth bulk buying until I sort the diameter out for my gun. Mine is a S&W 4.25" barrel for the M&P Pro CORE.
Thanks to everyone that inputted.
_______________________I was shooting 124 gr. plated bullets from Ranier .