I have three new barrels a VQ Carbon a GM second and a Magnum Research. the GM and the Mag will both shoot 10 shots at 50 yards that you can cover with a quarter. the VQ shoots about 3/4" other than the barrel the guns are identical with the usual mods. the VQ has about 200 rounds through it. Does it require a longer breakin? The mag shot its first ten shots just as good as any the GM shot great after 50. the VQ is still dissapointing. Also, whats kind of odd is they all shoot CCI Blazers better than anything else. This is OK because I get blazers 6.99 a brick. How do lead bullets affect a barrel? Do I need to do anything about lead fouling? Most guys here dont seem to clean their bores as much as I do. when hunting I usually shot 50-100 shots, clean and put away. Do you guys put yours away without cleaning after less than 100 shots? btw I clean with a weed eater line and patches and hoppes #9.