Does anyone know if any 223 Rem ammo sold in the US was ever loaded with corrosive primers? I have a Mod 788 Rem rifle purchased new in 1981. At the time I did not reload for the 223 and purchased and fired many different brands of ammo from gun shows and shops. I gave the rifle average care just as I did my other rifles, some of which are older than the 788. About 1985 I took up reloading for the 223 and the gun has seen nothing but my reloads since. Fast forward to last year and I purchased one of the inexpensive flexible bore scopes. I examined the bores of all my rifles and found no significant problems on all but the 788. The bore on it is badly pitted and I am perplexed as to why. About the only thing that makes any sense would be if the gun was fired with corrosive ammo and not cleaned promptly. The accuracy of the gun is great but cleaning the barrel is a horrible chore.
