RE: 2004 Patriot
I guess I would figure it slightly different. Add 30 fps for 3", subtract 12 fps for 6# over 70#, add 14 fps for 50 grains over IBO (my '02 Pat picks up 1 fps per 3.6 grain wt drop), add 3 fps for nock/loop = 311 fps. Same as my razortec.