Last time I was at the range, I took my bolt out to look down the bore to make sure I wouldn't shoot my magneto speed sensor. I was shocked by how much leftover powder/soot there was in my bore. I don't know what if it's unburned powder, soot, carbon.... any idea on that? It's large, very visible particles. I've seen it before, but not as much as that. I think it was the powder/primer combo I was using.
How do you know these particles embed into the bullet? I would think the blast would knock them out before the bullet travels over them.
So if you're at the range, do you put a dry patch or snake down the bore between each shot to clear it of any of this debris?
Also,