My old Mk V wouldn't shoot worth beans until I chopped it to 24"s. My 700 in 340 has always shot well. The 340 represents to me the upper end of enjoyment in a high horsepower do all. I've made shots upto 500 yards but I am not one of those "long range" hunters like on these boards. I wouldn't realize the advantage over an RUM, EDGE, or 338-378.