Squib round shoots through magazine of competitive shooter's rifle - GIF and video

[NeiljohnUK]

This is why you shoot slowly and pay attention. When reloading you check, recheck and then recheck the recheck.

When my father, long since passed from this mortal coil, was teaching me how to hand-load he always stressed "never rush, always layout and work logically" and if disturbed pour all the power back from any unfinished rounds back into the bulk measure and start again. Check weigh regularly and if your not sure pull the lot and start over.
He was asked by the local Police in the late 1960's, along with several other hand-loaders, to analyse some reloads following a fatal 'accident' involving a toggle cross pin failure on a po8 Luger, the toggle hit the shooter in the forehead killing him, every round was double charged behind a heavier than normal cast bullet. He said it looked like the guy had literally just poured the powder in to leave just enough room to seat the bullet.