Load data

[skippy]

Hello all !! This may be a simple question to some of you ; but , Sierrra's load sheets say they are for a 10 twist 10" Contender. I haven't set up a chrony...so... are these velocities listed the same when using a 16" - 7 twist ? I have not had very good-if any-luck with any of their loads for any listing. All of my measurments are in "spec", just not having any results with the data.

Thanks!!