I am ordering a barrel for a 300 win mag, 26" finished length, basic sporter .75 at the muzzle. I had planned on getting a 1 - 11" twist based on research, and was planning to shoot bullets around 180-190. He told me I wanted a 1 in 13" twist for that. I don't want to question a master, but I'm not seeing a lot of 1 in 13" recommendations on here. What do you guys think?