Kotklegg, I hate to burst your bubble but ..........no way !! Maybe you and Vodek and Formula1 all have the same chrono' s !

I have an LX @ 30" 80% 74# shooting a 393 grain arrow 296 fps with a WB rest and just a tru-peep & string loop.

297 fps on 60 # with a 400 grain arrow isn' t going to happen .............look at all the other LX posts on this forum ......all are within a few fps of what they should be, compared to the IBO rating, but yours . It doesn' t make sense ??? Unless your calling the spine number 400 ........400 grains and you actually have a much lower weigh arrow somehow ? Like a 320 grain arrow - Maybe ??