Home Forums Hunting & Shooting Hunting Rifles Significance of prefixes on Model 700 serial numbers

I originally posted this in the campfire, but it was suggested to post it here.

Can anyone fill me in on the story behind the prefixes on the Model 700 rifles?

I know they were instituted after the GCA of 68, and I have seen A, C, and E prefixes, but aside from the manufacture date, are some better quality or accuracy wise than others (mainly the change from C and E prefixes after Dupont sold Remington)?