all of the data you have basically means nothing...ladders need to be shot at 400+yds to distinguish nodes.

id suggest you shoot an OCW test instead of ladders...its a much easier/faster way to find loads...

http://optimalchargeweight.embarqspa...ons/4529817134

if you have any questions after reading the instructions in the link on how the OCW test works or is preformed post up there are a lot of helpful guys here.