I've noticed many of my 9mm & 40 s&w handloads have a big bulge to only one side where the bullet is seated. So in other words, the case has some eccentricity in this area. The below image (not mine) shows the bulge I'm referring to. Again, the bulge in my case is to only one side.
On some of the cases with the most pronounced bulge, I've had rounds fail to chamber completely - takes quite a bit of force on slide to eject unfired round. In the shop, these rounds also failed the plunk test. Eccentricity measured at the bulge is about 0.003" or so. Looking over some factory ammo, I can see a similar bulge to only one side, especially American Eagle 180g fmj 40's which some are about 0.001" max out. For both calibers using Lee 4-die set with Classic Turret.
What steps can be taken to minimize this bulging? Seeing this with fired and virgin brass. Couple different bullet types. Thanks!
On some of the cases with the most pronounced bulge, I've had rounds fail to chamber completely - takes quite a bit of force on slide to eject unfired round. In the shop, these rounds also failed the plunk test. Eccentricity measured at the bulge is about 0.003" or so. Looking over some factory ammo, I can see a similar bulge to only one side, especially American Eagle 180g fmj 40's which some are about 0.001" max out. For both calibers using Lee 4-die set with Classic Turret.
What steps can be taken to minimize this bulging? Seeing this with fired and virgin brass. Couple different bullet types. Thanks!