I know that this question maybe should be posted in 'art of rifle' section, but as I see, people there debate if their rifles are shooting half an inch or quarter of inch groups. I reckon that is their goal and cup of tea, right they are. I'm basically a hunter, my rifle/caliber are not much touted tackdrivers - a 7mm.Mauser in a sporterized .98 action, and I shoot at targets just for fun and training between hunts. Now: How often do you clean your rifle's barrels? do you remove all the traces of metal fouling? does some metal fouling, if let in the barrel, have any detrimental effects? I hear of fellow hunters say they never clean their barrels, but most are only hunters and fire very few shots. My rifle, with ten shots, gets a very conspicuous metal fouling, ant taking it all out is very time consuming. Thanks.