bulged cases

[long colt lawrence]

Howdy Gents,  I've got a rookie question for you.....

Heres the stats:
      Reloading 45lc.     Lee pro 1000 loader.

Heres the trouble:

   My sizing die is causing the case to bulge lower down, on the part that the die doesn't size. I lowered the die to encompass more of the case, now the bulge is just above the rim. The ammo still fits in my firearms, but it is noticeable. I've quit sizing them as a solution, my loads are light (cowboy) and don't expand the cases. Or mabye they are expanding and I'm not using the die correctly. I dunno.  Help would certainly be appreciated.

Thankyou.

[jgalar]

Most likely your chamber is a little oversized and causing the brass to expand. The die resized to nominal specs except area the die body does work. Measure unfired, fired and cases that are sized. If a case that you resize is smaller than an unfired one your die may be sizing them undersized. If a fired case is much larger than an unfired round than your chambers are oversized. If it fires and chambers Ok I wouldn't worry about it. If it bothers you contact your die manufacturer and they can send you a sizing die custom made for your chambers if you send them some fired cases.

[Leftoverdj]

If it bugs you, just back the sizer out and  only size 3/8" to 1/2" of the case mouth. As long as your cases chamber freely, there is no real reason to size the cases any deeper than you will seat the bullets.

[SLAVAGE]

um ok dumb question but are this once fired cases an have they been trimmed>?

[Graybeard]

I once had this problem in .357 Magnum. I tossed the sizer and used a different one and the problem went away even with the cases that already had the problem. My die wasn't a Lee but another well well respected brand. Name is meaningless really as it can I guess happen with any brand.

[Somerled]

I had those sort of .357 case sizing problems with a couple of XXXX carbide die sets. I switched to a different brand. That fixed it.