I reload and shoot .357 mag. I only use WW brass, which has a consistent wall thickness at the mouth of the case of .0105 inch to .0115 inch.
I shoot only JHP 125 grain bullets, and I really like a lot of “neck tension” gripping those bullets.
I use RCBS dies, and when I resize that WW brass, I do NOT use the expander ball……in the interest of getting a good tight inside diameter of the brass case. Using just an absolute bare minimum of case belling, I can seat .3570 inch diameter jacketed bullets cleanly. No shaving at all, never a collapsed or wrinkled case.
I’m wondering about getting an even tighter fit……by a thousndth or 2.
Anyone here tried resizing WW .357 brass with a 9MM resizing die? Seems like since jacketed 9MM bullets are nominally .355 inch diameter, that the 9MM resizing die would size down a .357 case to a tiny bit tighter inside diameter than would a .357 die.
Super tight neck tension gives _SUCH_ a clean powder burn, even on reduced loads.
Comments? Additions? Am I overlooking something?
Thanks, folks…… FjLee Denver CO
I shoot only JHP 125 grain bullets, and I really like a lot of “neck tension” gripping those bullets.
I use RCBS dies, and when I resize that WW brass, I do NOT use the expander ball……in the interest of getting a good tight inside diameter of the brass case. Using just an absolute bare minimum of case belling, I can seat .3570 inch diameter jacketed bullets cleanly. No shaving at all, never a collapsed or wrinkled case.
I’m wondering about getting an even tighter fit……by a thousndth or 2.
Anyone here tried resizing WW .357 brass with a 9MM resizing die? Seems like since jacketed 9MM bullets are nominally .355 inch diameter, that the 9MM resizing die would size down a .357 case to a tiny bit tighter inside diameter than would a .357 die.
Super tight neck tension gives _SUCH_ a clean powder burn, even on reduced loads.
Comments? Additions? Am I overlooking something?
Thanks, folks…… FjLee Denver CO