A fried of mine bought a rifle (AR) that only shot wolf. The original owner didn't clean it very well, apparently. He was having misfires, jams, and misfeeds. I tore it apart, and when I removed the extractor, behind it I found the inside had a thin layer of red on it. I got a small pick, and pulled what looked like a thin layer of red silicone out of the inside of the bolt. It looked like it came out of a mold. A perfect mirror image. I think this is the lacquer they use to seal the primers with. After I saw this, I spent the next hour or two cleaning the whole gun. It was the most mistreated firearm I've ever seen. Like I said, the original owner didn't keep it clean. If you choose to shoot wolf, in a good fire arm, you better clean it very well every time, or this is what you may find. Personally, If I spend the money on a quality AR, I spend the money on good ammo. It's like buying a $40,000 vehicle, and putting those $100.00 tires on.
[:)]
I don't want to start a war, this is just what I found.