This U-Tube channel has been folowing the ZSR lot 15 ammo that's been blowing up rifles....
He is no handloader but here's the results on weight of all the components of 13 rounds.
If you watch the video, try to leave him a comment on what you saw.
PLAY THE VIDEO IN 1.5 X SPEED...IT GOES FASTER AND YOU CAN STILL UNDERSTAND HIS COMMENTS
ZSR Lot 15 Powder Weight Results (SIX Guns Now Destroyed?)