FL sizing, shiny ring around base

Discussion in 'Reloading' started by emmagator, May 17, 2012.

  1. emmagator

    emmagator Well-Known Member

    Messages:
    315
    Joined:
    Jan 19, 2010
    I just purchased a new forster fl sizing die. I set it up per directions, turn die until touches case holder while press is at highest point, then tighten locking ring. When I size the brass it leaves a highly visible shiny ring around the base of my brass. I ran a paper clip inside the brass and feel no signs of thinning, some brass is only once fired. Is this normal or is there done adjustment I need to make? Thanks
     
  2. Joe King

    Joe King Well-Known Member

    Messages:
    1,390
    Joined:
    Apr 29, 2012
    yep it's normal, it's just a rub mark from your die squeezing the case back down at that point. If you start seeing a really .......whiteish ring then your gonna want to get the paper clip back out
     

  3. emmagator

    emmagator Well-Known Member

    Messages:
    315
    Joined:
    Jan 19, 2010
    Just seems really weird, because my old rcbs fl die never did this. Maybe I'll use a little more lube to see I'd that helps.
     
  4. 4xforfun

    4xforfun Well-Known Member

    Messages:
    1,255
    Joined:
    Oct 1, 2007
    Not sure about the ring, but that is NOT how I would set up my dies!!!
     
  5. emmagator

    emmagator Well-Known Member

    Messages:
    315
    Joined:
    Jan 19, 2010
    Um ok...very helpful!
     
  6. Joe King

    Joe King Well-Known Member

    Messages:
    1,390
    Joined:
    Apr 29, 2012
    I've seen it happen with a few rifles, they where all factory chambers though. Just as long as you get in the habit of feeling the web area for thinness you should be ok.
     
  7. sp6x6

    sp6x6 Well-Known Member

    Messages:
    3,043
    Joined:
    Dec 8, 2009
    Pick up a comparator with shoulder sleeves to check fired brass, then set die for a 1-.0002set back.This way you will not be overworking the brass
     
  8. Gene

    Gene Well-Known Member

    Messages:
    1,326
    Joined:
    Jan 23, 2007
    What the heck are "shoulder sleeves"? Who makes this tool?

    The ring is of no consequence, its just a tight fit between chamber and the brass. Neck sizing may be useful. You might want to try a small base die.
     
  9. emmagator

    emmagator Well-Known Member

    Messages:
    315
    Joined:
    Jan 19, 2010
    Well i just order the Hornady headspace gauge and the Hornady seating depth gauge. So i now i should be able to get dialed in. Thanks
     
  10. Joe King

    Joe King Well-Known Member

    Messages:
    1,390
    Joined:
    Apr 29, 2012
    gun)
     
  11. 4xforfun

    4xforfun Well-Known Member

    Messages:
    1,255
    Joined:
    Oct 1, 2007
    See, it was hepfull...you are on your way to learning how to set up your dies for your chamber. You just killed two birds with one stone (or post)! Almost none of my dies are screwed alll the way down to the shell holder. BUT, some I had to mill off twenty five thou off of either the die or the shell holder to get propper sizing...every chamber is different.

    Another tip.....along with measuring your brass head space..I take my fireing pin assy out of the bolt to help me find the correct head space. Without the FP assy, you bolt, when closed on an empty chamber, FALLS CLOSED. You should be able to push the bolt ahead on a sized brass and the bolt should fall about halfway closed by gravity alone....very light push to close it the rest of the way.

    Your welcome. :D
     
  12. emmagator

    emmagator Well-Known Member

    Messages:
    315
    Joined:
    Jan 19, 2010
    Thanks