A little late to the party here. A buddy of mine had a Remington model 710, I believe, chambered for 300win. He had an old Corps buddy load him some ammo. Long story short, he missed some work when the lugs sheared off his bolt sending the bolt back to meet his acquaintance. He asked me to deconstruct the ammo, and I found each round had what looked liked us869 or w780 ball, some sort of extruded powder, and blue dot on the bottom. They are no longer friends.