I shoot the same gun 870sm/ Ventilator .655. (26" bbl)
160's in a 10 @ 40. Win XX 3/2/6's
270's in a 10 @ 40. Hevi 13 3/2/7's
*have a kicks .655 that I was using in another barrel and going to try the other Win lead loads. Have allot of boxes of the HV, XX, and Supreme 6's.