Two years ago I purchased a supposedly new Remington 700 5r rifle from a company In Wy. I have had some very serious medical issues and have been unable to go out and shoot the rifle. No hunting, nothing. So, I am beginning to feel better so I thought I would start getting the rifle ready so that when the weather got better, we have been getting snow, I would go out and finally get to put some rounds down range. I have to load some rounds and get it all set up. Well, I always clean my rifles before going out. I used some Bore tech to run some patches through the barrel, and low and behold the first patch came out completely green. I had soaked the patch and ran it through, nothing special. But, it was evident that there was a lot of copper in this barrel. After several more patches and a nylon bore brush it started to lose the green color on the patches. My though is that ths rifle has been shot quite a bit. I sent an email to Remington to see how many if any rounds they shoot in production rifles, if they do, to insure that it is not there. I also sent an email to the company who sold me the rifle to see if they buy rifles from other dealers. This was supposed to be a new in box rifle. I did not want to make accusations at this point. But has anyone seen this much copper coming our of a supposed new in box rifle? I have not seen this much copper coming out of a rifle after going to the range and shooting. What is your opinion?
All factory Remingtons get shot at the factory for test firing (accuracy) & proper function testing. They use crappy factory Remington ammo (which is horribly nasty and cheap). This could be part of what you're seeing on the barrel patches. Both of my 5R Milspecs had alot of crap and dirt, dust, and cosmoline in the barrels (my 5R .300WM almost looked like it had rust in the barrel, but it wasn't) from manufacturing & from sitting on the shelves for a long time at the gun store. But after a few wet patches with RemOil (to push the bulk of the dust & oil out), and then a quick brushing with Pro-Shot Copper Solvent IV & a copper brush, followed up with a few wet patches with RemOil, then patching them dry, everything cleaned up just fine, and just smooth shiny white metal was showing. No issues.
Also, check for brass shavings on the bolt face to see if it has been shot alot, it should show very small and fine brass shavings (around the ejector, extractor, and firing pin hole) and if the brass was cleaned out, possibly some silver discoloration in those areas where the blueing is rubbing off, if it has been shot more than a couple test rounds at the factory.
Another possibility could be... Sometimes a gun is sent back to the manufacturer (before it is ever sold to a consumer) if there was an issue that the dealer noticed, and then the gun is repaired, tested again, and sent back out to the dealer for purchase...It does happen, but it is rare.
Curious to hear the responses from Rem and the company you bought it from.