I have a new this year remington 700 LS "midgrade bluing I was told" that began rusting after 1 day of rain hunting. I had the gun off stock prior to and did the usual light rub down with oil on metal surfaces. After coming home from hunt, bolt had rust starting as well as inside bolt channel and a few other places under stock. I was able to wipe it all down and it looks like new again but I'm not really impressed overall. Is this something that gets better with time, as more oil gets applied? Would a stainless rifle have this same problem?