I have several pounds of BL-C(2), I plan on loading 223Rem 53gr sie hp and 55gr fmj. One manual has a start load of 26,0gr with 28.0 max ( which over flows the case). Another manual has 25.8 start and 26.6 max. Haven't looked at the 55gr data yet. Which data should I use? These loads will be used in ar-15 16"bbl and a Ruger American 16"bbl.