I got into .22 Match shooting about five months ago. I have a C-Z 457 MTR heavy barrel and shoot S-K Match .22 bullets. Match bullets have a heavy coating of Beeswax on the bullet. I have been told by some good shooters that it is NOT a good idea to clean the barrel but clean the chamber for carbon often. They say the barrel gets "seasoned in" with the Beeswax and shoots better when not cleaned often. I am still shooting decent groups but wonder since if after about 500 rounds, cleaning might be recommended. For top performance in Match shooting what do top shooters do?