I've narrowed down my search for an all purpose LR deer round to these two choices. .270 WSM: Pros - 24" bbl, good for box blinds where room may be tight. Cons - Feeding may be an issue. Lower B.C. with 140 grain bullets. Rifle will be a Winchester 70 Extreme Weather in a McMillan. 7mm STW: Pros - Higher B.C. with 150 or 160 grain bullets. Cons - bbl life, really needs a 26" tube. Rifle will be a M-70 Classic Stainless in a McMillan. Anticipated shots will be out to 500 yards. I'm leaning toward the WSM, but love the ballistics of the big seven. I'd appreciate any input from anyone who has actual experience with either of these.