I don't clean the bore every time--only when I'm not going to shoot the gun for a while. I won't put away a dry/unoiled gun for a long time in the humid conditions we have here.

I went plinking last week and took my 1949 Marlin 39A and my 22 CM--I was very surprised at how many "fouling" shots it took before the 39A started shooting where it should have. I had given the bore a good cleaning as I described above the last time I shot it which was mid summer. I shot at least ten times before it started dropping them in there like it should--after that it was fine.

Of course the 22 CM shot way better than I can from the git go, as usual.