Not vinyl, a sprayed on coating Barnes used to offer on thier original X bullets which worked pretty well. I have a couple of clients that slew many,many African plains game with those blue "XLC" version of the bullets. They tend to minimize fouling and increase accuracy in mnay rifles for which they are tried. I still have a box or threee or.....

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About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500