In general I swab my barrels evry 20-30 cycles (with patches mostly an occational use of a NYLON brush) but, I recently read an article stating that a 22-250 was cycled 100+ times (with no loss of accuracy) before cleaning. IT was stated that after cleaning it took longer to foul the barrel "IN" again. I should mention jacketed stingers were used. does anybody else shoot extended intervals ?