Joe you'll be fine, just use good solevants like sweets, CR10, etc and clean her as often as you can. I have seen rifle sit for much longer than 50 shots that cleaned up with a little effort and a number of patches.
Tpoiler shot theory, well true with some guns not all require a fired shot to keep POI. Yes oil will cause a shift in POI as increases the pressure in the bore...it is never a good idea to fire a CF with oil in bore as it can be potentially dangerous
] As such I always ensure my bores are dry before I shoot them. A routine can be set up to ensure your maintaining your rifle as well as prevent this increase of pressure and worries about shifting POI. While your method works, it does have a potential side effects if excessive oil or film was left by some...therefore I would never suggest or agree with this method. Just my 2 cents worth
