Thread: Cupronickel bullets and barrel fouling

How bad is this stuff? Got a bunch of 303 ammo thats got cupronickel bullets.
I have only shot half a dozen rounds of it in my rifle, but how hard is it to remove? Given i have no idea on the history of my gun, its probably nothing to be concerned about in the scheme of things as it probably was all it shot for its early part of its life.
I have pulled some and had it in my tumbler for a couple of hours and noticed that the nickel plating was beginning to come off.
Since it seems to be a thin layer and somewhat easy enough to remove, I think i will run it all through the tumbler to take it off.
I thought the whole jacket was a nickel/copper alloy on this, but it appears to be a standard copper FMJ thats plated in nickel, does this sound right?