I have the Lee undersize die and it certainly gets bulged Glock brass to resize correctly- ie fits gauge. The question I ask is- do you only use the die on brass that doesn't fit the gauge after using a normal die or do you just use it on ALL .40 S&W brass you find/have?
Use undersize die with .40S&W- always?
- Thread starter Luggernut
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You will just have to try it and see. It may not (probably not) be necessary at all with brass that has not been stressed badly.
My original RCBS .45 sizer did not size Remington brass down enough because of thin case wall thickness. It did all other brass fine. I called RCBS and they sent another sizer. It was real tight and I got bottlenecked reloads from it with all brass, especially thicker walled brass. I quit using it and Remington brass. I later ordered a Redding sizer and it fell in between those two sizers and worked great. I don't have the sizes here with me or I would include them.
My original RCBS .45 sizer did not size Remington brass down enough because of thin case wall thickness. It did all other brass fine. I called RCBS and they sent another sizer. It was real tight and I got bottlenecked reloads from it with all brass, especially thicker walled brass. I quit using it and Remington brass. I later ordered a Redding sizer and it fell in between those two sizers and worked great. I don't have the sizes here with me or I would include them.
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