I'm new to long-range shooting (2-3 years) but got into it with a factory Tikka TAC A1 6.5 CM with a Viper PST Scope. I'm loving the added range and accuracy the Tikka adds to my rifle collection. The rig is great fun plinking at the range but a beast when toting to the blind for hunting. What would be your recommended biggest bang for the buck if I wanted to reduce the weight without reducing accuracy? Carbon barrel? New stock?