I was wondering if anyone can tell me about my SR, it is in lovely condition with hardly a mark on it. Yet for some reason the barrel is a distinct reddish colour? There is not a hint of rust anywhere, with no evidence whatsoever of any tampering with it. Everything seems completely original and it shoots like a dream. Only the barrel has this reddish colour. The second picture below has caught it more clearly. I guess the rifle was made around 1993 so its around 25 years old. I've added a cocking aid and strange 1 piece scope mounts and a Vintage Tasco scope for now. Many questions I have rolling around my head, a few are:

Did it leave AA like this, maybe a limited edition?
Has the barrel undergone a different blueing process that has changed colour over time?
Has the barrel blueing reacted to a certain gun oil?

The condition is really excellent, so I have no.intention of getting the barrel re-blued. Its staying as it is, just wondering if anyone knows the reason for the barrel colour.

Cheers