A guy over here in the UK is #####ing about the fact that he has 'lost' the first three-four inches of rifling in the leade of his SAKO Quad after 9-10,000 rounds down it.
Funny enough, this little rifle used to be a steady 3/4" five shot 100m shooter and is now barely able to keep ten shots in a three-inch circle.
Allowing it to 'coke' up improves the group for a while, he says, but then he cleans it and it all goes to pot again.
Those I shoot with hereabouts with this little gun note that the different brands of cartridge make a tremendous difference - most agree that only one will work properly in their rifle.
The general consensus here is that at least 5000 rounds is about all you should expect, in a SAKO Quad anyhow, and that is from a few professional pest control shooters.
I suspect that over-cleaning is the real culprit here, as suggested up the page.
I also note that I shoot a few older rifles - 1910 BSA, 1930 Walther, 1934 Walther, 1937 Mauser, 1957 and 62 BSA and a 1963 Anschutz. All shoot a whole lot better than I do. The '37 Mauser in particular is a certain 10 shots in a centimeter gun all day long with the cheapest GECO ammuntion.
tac