The trend these days seems to be for barrels of 22 inches. I however prefer a 24 inch tube even for non magnum calibers. I'm 6'2 so the extra length is of no concern to me, but i do like the swinging charictoristics and the increased velocity never hurt anyone. By the way, thats an awsome caliber to be building a rifle on. My congrats, and keep us posted on the progress!