Re: Federal 215m primers
I've never had a missfire from any primer, but I used a hand priming tool and primer trays and a thin transparent plastic card to handle them. Never ever ever touch primers with your fingers. Odd thing is they've gotten better about making primers more resilient to oils, but skin oils are the bane of primer function.
Keep in mind the animals we shoot for food and display are not bullet proof. Contrary to popular belief, they bleed and die just like they did a hundred years ago. Being competent with a given rifle is far more important than impressive ballistics and poor shootability. High velocity misses never put a steak in the freezer.