rbuck351 - GONRA sez be veeery careful using Shotgun Shell Battery Cup Primers in a Centerfire Rifle application! Wear first class eye protection and (IF you MUST doit) only LOW PRESSURE loads.
>>> Please do NOT use Shotgun Shell Battery Cup Primers in this application. <<<
(Hava vague memory of a .50 BMG reloader trying this long ago to save $$$$ over pricy .50 BMG primers.
Was NOT a satisfactory application. Just "Looked Good".)