Personally I take ALL loading data I find online with a hefty grain of salt. Unless it is from a major powder or bullet manufacturer then I assume it is not pressure tested and therefore will not use it unless I am able to corroborate it with data known to have been pressure tested. Don't matter how much folks protest and say they can decihper pressures by various means such as witch craft, smoke and mirrors, reading primers, extraction difficulty, measuring case head expansion, etc I ignore it like the plague and stick with pressure tested data. BTW all of the above methods are about equally useful as an indicator of pressure.
GB
