cayugad

Have not had that happen to me yet, but my very first thought, was shaved lead from conicals and after reading FG's thoughts very possible some nickel coating could have come off in the bore. About the only way you might know is have a flake analylized and/or a bore scope to look at your bore.

I have seen some nickel guns that the nickel was has cameoff the outside in flakes... Both of my A&H's are nickel, but like I said I haven't seen anything yet from or on them.