Well, I cleaned my old Remington Rand 1911A1 today, and when I looked down the barrel after running a wire brush and cotton swab through it, that it appears to be quite pitted. Not sure what it is exactly, I have only shot US manufactured ammo through it since I purchased it two years ago, so I am going to take the barrel by the local gunsmith shop this week to get his take on it.
But, if the barrel is as corroded as I am afraid it is, then there will be no more shooting it.
It's a terrific old pistol, probably the only one that I absolutely will not ever sell. The only thing I have done to it is replace an aftermarket slide stop with an original USGI slide stop, so the weapon is now 100% USGI, just like it came out of the factory in 1944. For all I know, it killed a few Nazis in it's prime.
I don't want to replace the barrel, I want to keep it just like it is, so I guess I will have to buy another 1911 soon to replace it at the range.
I guess there's a silver lining to every cloud after all!