Gap .220 swift range report.shot 400 500 and 600 yds saturday 12 10 2011. 1.625 groups at 4 and 5 hundred yds. and 1.500 at 600 yds shooting the new 53 grn.vmax 37 grns. varget 2.725 o.l. norma brass cci large rifle primers. Moon at Gap built this ,couldnot be happier.