Originally Posted by PCJim
The 357Sig case is basically a 40S&W case necked down to hold a 9mm bullet. From what I understand, only one manufacturer, Dillon, makes a 357Sig carbide resizing die and it is not cheap (I use Lee). Many reloaders use a 40S&W carbide resizing die to resize the main body of the brass without having to use a case lube, then use the 357Sig resizer for proper setback of the shoulder and to resize the mouth.
Yep, the only way to fly is Dillon for carbides sizers. Wierd, Lee could put a carbide ring in their 357sig die just as easily as the 40. So using the 40 die is vaible, but adds a step as you must use the 357sig sizer to set the shoulder & reform the neck. It's a low pressure job at that point, no case lube needed.
"Given adequate penetration, a larger diameter bullet will have an edge in wounding effectiveness. It will damage a blood vessel the smaller projectile barely misses. The larger permanent cavity may lead to faster blood loss. Although such an edge clearly exists, its significance cannot be quantified".