Hello! I have a Remington model 721 chambered in 30-06. I am really wanting to build a 6.5x284norma and have read this action is applicable. Can anyone suggest some barrels? And specs? Wanting at least a 26" barrel in medium up to sendero contour and would like to shoot vld's or seirras with them seated way out to utilize case capacity. I have also read this is done in the chambering process. Is this true?