I been to buy some 6.5x55 factory ammunition today and come back with a couple boxes of Federal 140gr Power Shok (soft points) to try through my Tikka T3 lite.
On inspection of the ammunition, all of the bullet heads appear "blued" and not the traditional copper colouration. It is definitely not black, its a blued marbling affect of the bullet heads which I've not seen before.
It my first time using Federal Ammunition so it just took me by surprise. Does any one shoot this stuff regularly, and is this bluing normal?