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Thread: RESIZING

  1. #1
    Basic Member rjtfroggy's Avatar
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    RESIZING




    I have a question. I have about 150 empty once fired 243 cases that I want to size up to 260 rem., is there a article or book out there for resizing brass?
    Or do I just do what some have said and just run them through a 260 fl die with plenty of lube on the case?
    I have never done this I always just buy some cheap ammo and save the cases for reloading but I have these and don't need them for the 243 because I have around 300 loaded up for that rifle.
    Any and all serious comments appreciated. THANKS
    FROGGY
    See profile for fire arms
    Do it today there maybe no tomorrow

  2. #2
    Basic Member
    Join Date
    Dec 2006
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    313

    Re: RESIZING

    I've never resized 243 to 260 but I'm pretty sure you can do it with a FL 260 die. You might see if Redding makes a tapered expander ball in .260. That should make it easier.
    Charlie
    laportecharlie

  3. #3
    Elkbane
    Guest

    Re: RESIZING

    That works fine - use an expander mandrel instead of the die. BUT......in my experience, you're going to get "doughnuts" on those cases by about the thrid firing........ I used lapua brass necked up to 260. I would try it on about 20 cases before I went whole hog on it.....
    1. rund the cases over the mandrel to neck up.
    2. F/L size with 260 dies to get proper neck tension

    Sometimes the first time doing this you'll have high runout on the cases but they straighten out on the frst firing/forming. I would wait to trim/chamfer until after fireforming - then get the necks uniform.
    Elkbane

  4. #4
    Kawabuggy
    Guest

    Re: RESIZING

    and if you don't already do this-anneal those cases before you start to size them up. That should help them survive the up-sizing, and keep the necks from splitting later.

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