i swab my barrel after each string... when shooting... and letting it cool... just a bit of #9 and a patch to get the powder out followed by a dry patch or two.... then it gets a good cleaning and i'll put 5 more through it to make sure it is still "there" and hunt with it that way... then it gets a thorough scrubbing of the tube before it goes back in the gun safe for any extended period... i don't get much copper fouling so my method is a bit different.... if you get a lot of copper fouling your cleaning time and procedure is going to change some but i'd still foul it before hunting after one final "sight-in" session of 3 - 5 rounds... if the first round is a flyer don't be discouraged... keep on going and if the rest group you are good to go... personally... i;ve found that a squeaky clean barrel will toss a flyer more than a cold vs warm barrel... though if i get one of my tubes "really" hot groups will open up some... but as always... guns are like people... no two are alike....