I've got 600 Winchester SR primers, with No. 6 1/2 - 116 printed on the box I'm not sure of the age. I got concerned about them while reading a current thread about possible primer issues.
I then went to http://www.6mmbr.com/223Rem.html
And read up a bit and came to this...
The latest generation of Winchester primers, with brass-colored cups, should be avoided for AR15 use. The old silver Winchester primers worked fine, but the current WSRs are soft and can be pierced more easily than CCI or Rem primers.
The "cup" is the part that the firing pin hits...correct? if so mine are silver colored. I'm starting out with mild loads but will eventually work my way up.
Should I just "sit on" these old Winchesters or start out with some Remington 7 1/2's or another "harder" primer? I don't have cash to burn, but, I don't mind spending the coin to start out on the right foot, I would rather go with a "recommended" primer then cause any potential issues. This is my first loading session with .223.
What would you do?
This for an AR.