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Forums Forums Ammunition Reloading 124 Grain HST Pull downs, No case neck Tension Reply To: 124 Grain HST Pull downs, No case neck Tension

  • coriolis7

    Guest
    July 12, 2021 at 2:14 am

    What diameter is a resized case before flare? Neck tension isn’t really set with crimp: it’s from the brass being smaller in ID than the bullet and the difference is diameters sets the tension.

    I’ve had some bad 9mm brass where it just wouldn’t resize properly – it would spring back a lot during resizing and wouldn’t hold a bullet.