RE: Max powder charges APP, 777
APP runs real close to Pyrodex on the strain gage right up to 150 grs.
777 on the other hand is stronger it peaks closer to the breach and runs 20 to 25 percent higher on the strain gage,it also gives quite a bit more velocity. I personally have limited my 777 loads to 110gr in my mag rifles and 85 in the non-mags. Lee