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I think I have a problem with belt bulge.

Discussion in 'Handloading and Reloading' started by snakeman, Sep 23, 2012.

  1. snakeman

    snakeman Well-Known Member

    I have a 257 weatherby. I love the gun and of course the caliber. When I got the gun I got some brass and rcbs dies secondhand. For some reason, after full length sizing the brass, it will go mostly into the chamber but the bolt absolutely will not close :banghead:. I colored the brass with a sharpie and found that it marks the cases just behind the shoulder and just above the belt. I then colored a new factory round and found that it was marked just behind the shoulder as well, but not above the belt. This brass is expensive help me please!
  2. 243winxb

    243winxb Well-Known Member

  3. snakeman

    snakeman Well-Known Member

    Thanks. That's insightful.
  4. snakeman

    snakeman Well-Known Member

    I was looking at the redding body die. Will it do the trick or is the expensive die the only one that will solve the problem?
  5. snakeman

    snakeman Well-Known Member

    here's the problem. Or what I think is the problem

    Ok so It's so close to the rim that I'm second guessing this as the problem. But what else could it be? The shoulder on the factory rounds is the same as this one and the neck isn't binding at all.

    Attached Files:

  6. 918v

    918v Well-Known Member

    I think you are sizing incorrectly.

    How did you set up the sizer die?
  7. snakeman

    snakeman Well-Known Member

    I set it up to where the bottom of the die was just touching the ram at it's highest point.
  8. Jeff H

    Jeff H Well-Known Member

    Have you tried to check that with feeler gauges while there is a brass casing getting resized? I would bet that your press is flexing and you aren't getting the resizing you thought you were.
  9. 918v

    918v Well-Known Member

    From that point, turn the die in deeper in 1/8th turn increments until the bolt closes.

    Also, don't forget to lube the inside of the case necks.
  10. RonSC

    RonSC Well-Known Member

    Just a guess here but I'd wager that what you are experiencing is case "stretch" Belted mags are notorious for this phenomena. Check your overall case length closely. AND insure that you are not pushing the neck back when sizing. Good Luck!
  11. snakeman

    snakeman Well-Known Member

    I don't have any feeler gauges. Or at least I don't think I do. After it didn't size right the first time, I tried screwing the die in a little further but that was different brass. I may have to try it again. I am using a lee anniversary single stage press. I trim and lube the case necks every time. I know my bench gives a little when i fl size but don't know about the press.
  12. 243winxb

    243winxb Well-Known Member

    Make sure that you are adjusting the FL die so that there is no daylight between the top of the shell holder and the bottom of the die during the sizing process. If you see daylight at the top of the stroke, readjust the die downward and repeat sizing until it disappears.
  13. 243winxb

    243winxb Well-Known Member

    After looking at you photo, is that a crack in the brass? Like in a pending case head separation starting? [​IMG]
    Last edited: Sep 23, 2012
  14. 918v

    918v Well-Known Member

    All presses spring. Sometimes you have to adjust the sizer die to compensate for this springing. Are you lubing the inside of your case necks?
  15. snakeman

    snakeman Well-Known Member

    I always lube the inside of the case necks. that's marker buildup no cracks in the case (phew! you had me scared for a second there). It took a few more turns on the die and some trimming of the case neck and i got an empty to chamber. I'll see if seating a bullet has an effect on it later this week. Wish me luck.
  16. Shmackey

    Shmackey Well-Known Member

    Just need to tweak the sizing die down a little. A quarter turn will likely work. No need to overdo it--go only as far as it takes to get the rounds to chamber.
  17. Walkalong

    Walkalong Moderator

    Check to see if the die is touching the shell holder/plate when you are actually sizing a case, not with no case in the die.
  18. Craigman

    Craigman Well-Known Member

    I learned here, from RC of course, that the actual belt can grow* in diameter a bit. I had gotten some 1x fired brass from someone and it wouldnt chamber at all. It looked to be true 1x fired too. .270wby. I measured and the belt dia. was slightly larger. The gun it was previously fired in had a slightly looser chamber. No die will fix this to my knowledge.
  19. snakeman

    snakeman Well-Known Member

    thanks guys i'm getting it sorted out as i can
  20. 918v

    918v Well-Known Member

    But the outside diameter of the belt is not the source of the binding.

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