I haven't seen any sensitivity test data on the various primer mixtures. Has anybody tested this? I made a drop test rig for my percussion caps which I adapted to primers so I can compare commercial and home made primers. Its pretty simple: a piece of 3/4" PVC pipe, a couple adapters, a 1/16 dowel pin for a firing pin, and a 2 ounce steel cylinder for a drop weight. I could post a photo if anybody is interested.
So far my percussion cap formula of 1 rollcap with ~1/4 to 1/2 grain 4Fg powder that works great on BP guns seems pretty wimpy in primers.