Case Bulge
Quote from Reloader on February 21, 2010, 1:27 amI have case bulge at the bottom of my finished 9mm rounds that prevent them from fully dropping into either the case gauge or barrel of my pistol.
I double-checked the setup instructions, which say to back the seating die back 2 full turns off the plate. This seemsto be too much. I can see full 1/8" or more of the case with the ram in the fully up position. I am tempted to screw the seating die down to the plate, then back it off only a smidge. Then reset the sizing and crimp dies...
Do you see any flaw in this logic?
I have case bulge at the bottom of my finished 9mm rounds that prevent them from fully dropping into either the case gauge or barrel of my pistol.
I double-checked the setup instructions, which say to back the seating die back 2 full turns off the plate. This seemsto be too much. I can see full 1/8" or more of the case with the ram in the fully up position. I am tempted to screw the seating die down to the plate, then back it off only a smidge. Then reset the sizing and crimp dies...
Do you see any flaw in this logic?
Quote from Reloader on February 23, 2010, 4:09 pmFirst, size several cases, check these cases in the gage-sized only, no flaring, no bullet seat. What bullet weight are you using? 147 grain bullets can cause issues with seating depth bulging the case.
First, size several cases, check these cases in the gage-sized only, no flaring, no bullet seat. What bullet weight are you using? 147 grain bullets can cause issues with seating depth bulging the case.
Quote from Reloader on February 25, 2010, 5:24 amHi- Thanks for your response. As it turned out, backing the seating die off two full turns is way too much. It leaves too much of the lower part of the case unsupported. The manual is wrong. I readjusted the seating die down to the shell plate, then backed it off about 1/4 turn and the problem went away.
BTW, I was loading 125 gr. lead round nose from Missouri Bullet Co. To your point, I had some bulge problems with 147 gr. bullets a a while back, but haven't used them lately.
Regards,
DBE
Hi- Thanks for your response. As it turned out, backing the seating die off two full turns is way too much. It leaves too much of the lower part of the case unsupported. The manual is wrong. I readjusted the seating die down to the shell plate, then backed it off about 1/4 turn and the problem went away.
BTW, I was loading 125 gr. lead round nose from Missouri Bullet Co. To your point, I had some bulge problems with 147 gr. bullets a a while back, but haven't used them lately.
Regards,
DBE
Quote from Reloader on February 25, 2010, 6:04 pmI think Dillon gave the best advise. Check your cases in a case gauge. Then adjustments to loader make more sense.
A 9mm case that is bulging is a sign of a load that is too hot and maybe very dangerous. I would review the amount of powder being used too.
(40S&W cases are the only cases have a different history. Yet because it is my face behind the firearm, I still toss a bulging case - penny's to lose versus a face, eye, or hand, etc.).
I think Dillon gave the best advise. Check your cases in a case gauge. Then adjustments to loader make more sense.
A 9mm case that is bulging is a sign of a load that is too hot and maybe very dangerous. I would review the amount of powder being used too.
(40S&W cases are the only cases have a different history. Yet because it is my face behind the firearm, I still toss a bulging case - penny's to lose versus a face, eye, or hand, etc.).