I am looking for a new rifle. I am seeing some really good deals on the WBY Vangurads in .300 Wby Mag. Thing is I am looking for more performance than the standard .300 WBY. Something more along the lime of a .30-378 WBY, 300 Tejas, 300 Rum, Lazz Warbird. Are any of these possible to be made out of a .300 WBY vanguard without a new bbl? I just like how many aftermarket stocks there are for this rifle like the Blackhawk Axiom thumbhole stocks.