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pete2 · October 30, 2020, 11:00 AM

I get the bulge at the base of the bullet, use .452 cast 200 gr RN. Not a problem in my semi auto guns but they do hang in a 625 revolver I shoot. I bought the Lee taper crimp die with the sizing ring in it. Works fine and as far as I can tell on IDPA ammo accuracy is not affected. It would probably make a difference in precision(bullseye at 50 yards). My bullseye load is with a 200 SWC cast, also .452. I use a batch of GI cases and don't get the big bulge with them. The Lee die does not remove the bulge but it does reduce the size of it to the point where it will chamber. If it did completely straighten the case it would size the bullet to the extent it would mess up the accuracy due to the undersize bullet.

October 30, 2020, 11:00 AM	#7
pete2 Senior Member Join Date: May 15, 2012 Location: Texas Posts: 2,566	I get the bulge at the base of the bullet, use .452 cast 200 gr RN. Not a problem in my semi auto guns but they do hang in a 625 revolver I shoot. I bought the Lee taper crimp die with the sizing ring in it. Works fine and as far as I can tell on IDPA ammo accuracy is not affected. It would probably make a difference in precision(bullseye at 50 yards). My bullseye load is with a 200 SWC cast, also .452. I use a batch of GI cases and don't get the big bulge with them. The Lee die does not remove the bulge but it does reduce the size of it to the point where it will chamber. If it did completely straighten the case it would size the bullet to the extent it would mess up the accuracy due to the undersize bullet.