I purchased a 40 cal Sig last week so I could reload all of the brass that I picked up at the range. I also purchased a go - nogo die so that I could check for proper sezing of the bullet. The brass that I picked up all had a slight bulge at the base of the case and when I resized them they still would not go through the go - nogo die. I then purchased a Redding G-RX base sizing die to take the bulge out, which it did. I understand that Glock pistols have a unsupported chamber which will put a bulge in the brass. My question is since I purchased a Sig which has a supported chamber, why after running the brass through the G-RX die and my resizing die and then shooting the bullets in my Sig do I still get a slight bulge in the brass? I also purchased brand new remington brass and reloaded it with 6.4 gr of #5 powder and it still puts a bulge in about 4 out of 10 casings. I then purchased winchester bullets 180 grain already loaded and shot them and had about 4 out of 10 casings with a bulge in them too.
IS THIS NORMAL HAPPENINGS FOR THE 40 CAL PISTOL.
If any has any experiance or information on this problem it would be greately apperciated if you could share it with me.
Bruce
