I have a pretty new Savage Tactical 300 WM with 24" barrel and about 150 rounds of brass. Powders are maybe four lb IMR 4350, 3- H4831, Surplus 4895 6 lb Varget and 5 lb IMR 8208. Bullets are 500 count SMK 200gr HPMK, 500 178 HPMK, and 1500 155gr HPMK. What combo would you try for 1000 yards...