ORIGINAL: marshall9779
I tried them when sighting in my Optima .243 barrel and personally will never shoot them again as I had 2 out of 16 fail to fire. My dad reloads and has some for me to try when I can pick them up. The one that shot grouped well, but I would rather have something I can depend on.
A bullet cannot cause a cartridge to "fail to fire", that is either a problem w/ the primer or the rifle's firing pin.