Purchased a canister of APP to try in my .50 caliber Encore. Was shooting 100 grains by volume and using Winchester 209 primers as the ignition source. Fired off about 20 rounds.Upon getting home and beginning the leaning process noticed that the inside cup section of my breechplug was pretty much loaded up with a sugary type residue? Now I am aware that APP issugar based (ascorbic acid?) but is a build up natural? Would a different primer, maybe less hot than the Winchester be a better choice for this powder? Your thoughts.....