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cases buldge
joes
Member Posts: 484 ✭✭✭
Can someone answer why when loading, I get (3 or 4 aprox.) cases that buldge when I run them through the press but they are fine before I run them? The buldge on the case is such that it will not fit into the chamber. This happens with several different dies calibers (lee dies). The rest of the cases are fine and the last batch of 22-250, shot .5 in @ 100 yards moa. Please help me understand, thanks, Joe.
Comments
Given your "Several calibers" statement...perhaps you are not lubing properly. Sounds like tecnique, rather then hardware. Please give more details of lubing procedures, die set-up, ect...
If you seat and crimp into the cannulure..then be sure and check case length of EACH and every case....crimping is not really necessary...
Back the bullet seating die out one full turn, turning it counter-clockwise. Then tighten the lock ring.. Re-adjust the seating stem down to get the correct cartridge OAL. That should solve your probelm.
if not, check the diameter of the expander ball on your decapping stem.
The 3-4 cases that are bulging are probably a bit too long. I agree that improper adjustment of the seating die is the culprit BUT the die is correctly adjusted for 98% of the cases. Trim the brass to the same length and your crimps (if you are crimping) will be uniform and no more bulged cases.
All the above, first look at the sizing die and see if you are getting the bulge then. Not usual, but it happens. Usually with those the bulge is at the bottom below where the die makes contact with the case. Unless you are neck sizing. There is enough room in some NS dies to make a bulge below the shoulder. Something to check here also is how much lubricant you are using. It doesn't take much with some dies to mangle a shoulder as they have tight tolerances. I personally have 4 sizers that require a wipe of lubricant and will dent shoulders when loose lube is left on case shoulders.
Then look at the sizing die. This usually is where shoulders get bunched up. What I do to set a sizing die is put a case (trimmed to length as mentioned above)in the press and run it up. Then screw the seating die down until it touches. If I don't want a crimp I back it off 1/2 turn and lock down. If I do want a crimp, I bump down 1/8-1/16th of tuns Until I'm satisfied I've done enough damage. With each turn I check the brass to see how much it gets moved inward. I do this with a throw away bullet. That way when I pull it I see what it does to the bullet. Helps keep accuracy up. Anyways, that's what I look for when troubleshooting this process, -good luck