I want to start a load for a new 300 win mag I picked up. The rifle is a LAW and it has a 24 inch barrel and 1 in 10 twist. I will be using Nosler brass and want to try the 200 grain accubonds. So what primer and powder combo would be best for this barrel length and twist ratio? Also keep in mind that I live in North Dakota and need a powder that is NOT temp sensitive. Also, I have a hard time getting federal primers where I'm at also. CCI is plentiful, but I guess i could order federal if anyone has them in stock......Thanks