There ARE no problems with mag primers. I was just relating what the Federal Engineer said and in my 375 and 338 with extruded powders, the accuracy improved with the 210s over the 215s. With my H-414 load in the 375, the 215s worked best. I don't know what the confusion is here.

A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”