Originally Posted by CopperKnight

After better than 1,000 rounds, I've never had an issue with slamfires and my firing pin is as free as yours is. The pin itself doesn't seem to be heavy enough to set off a primer by itself.

As for the stripper clips, I've always had poor luck as well. Your best bet is to lift up a little on the tip of the top round with your finger while pushing down as far back on the head of the case as possible with your thumb. This helps keep the extractor groove from binding in the clip.