I need too get some RCBS dies too reload 38 special. They will be loaded with light to medium loads and I did not know whether to get the taper or roll crimp.
Taper crimp when used properly is to remove belling. Roll crimp actually crimps, and adds to bullet pull. Taper crimp is used more for cartridges that headspace on the mouth, roll crimp for rimmed rounds.
Thanks for the reply. I am wondering if I might get some bullet jump even with the light to med. loads. Everything I have loaded so far has been with a taper crimp, 40S&W and 9MM.
I mostly use a roll crimp for .38spl, I also have a taper crimp die that I use for plated bullets and some Wad cutters.
Make sure the die set you choose has a carbide sizer die.
As long as you have the correct diameter insert in your belling die and correct diameter slugs so you have good neck tension, crimp jump should be a non-issue.
"...a lot of .38 Spl dies end may end up loading .357 Magnum for Scandium Snubbies....
" There's great wisdom in those words.
I use a Lee 4-die setup, with the FCD set up to allow dialing in the crimp from minimum to maximum. I was surprised at how much crimp was needed on the Speer 158LSWC-HPs when working on "FBI900"-type loads.
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