I've experiernced similar results going from tupperware to a bedded walnut stock. My best 270 Win groups to date with a 115 grain Sierra BTHP and RE-22 have been .647", .714" and .409" for three shots @ 100 yards using a 3x9x40 scope. I have yet to find a 130 gr load that shoots less than 1.4" at the same range.