putting together a Savage long range hunting rifle and ordered a Shilen Select Match 28" varmint contour replacement barrel. I ordered it in 1-8" twist for the 180gr VLD and in preparation for the New 195gr vld I keep hearing about. Since the barrel will be chambered by Shilen, and I'm planning on shooting such a long bullet, should I request they put a longer throat on it? and if so, what would I be asking for? any help would be appreciated