While on our annual trip to Montana, I purchased a new gun with the help of a knownledgable friend. I made a 490 yard shot on Antelope with his gun and some 200+ with my 25-06. Now I am HOOKED. Keep in mind, I am from Mississippi where any shot over 100 yards is unusual. I wanted a rifle with long range capabilities that both my son and I could use on our annual trip. I purchased a Remington model 700 XCRII .300 Ultra Mag. My friend and his father are setting it up. 20X Leopold scope, and sherman tank muzzle brake. They are going to determine all the data for the scope adjustments. He will bring it down south in the spring when he comes down for fishing with us. My question is there something else I should consider to add to the set up?