Ok I was looking for some bullets to order and try my hand at some f-class shooting in the near future. While looking I went to Burger bullets. Here is where I am getting confunded they say you can shoot their 180gr and 190gr bullets in a 12 twist barrel. All others I have talked to (Gunsmith, F-class shooters ect...) all say the largest you can go with a 308 win is 175gr for a 12 twist barrel. Is anyone shooting the 180gr or 190gr bergers in a 12 twist on here of does anyone know anybody shooting them?