Bartlein Rem varmint contour bbl 6mm .237 - .243 8" 5R rifling. I was planing on 6mm Creedmore ,but reading previous thread everyone seems to love the 6mmXC . Use of this rifle will be varmints(Prairie Dogs) and Steel out to 1,000 yds . I ordered Creedmore dies,I can easily send them right back. So is Tubbs 6mmXC brass whole lot better than brass I can get for 6mmCreedmore ? Also thinking of 26" finished length. Screwing this bbl onto a Rem 700 Sendero .