I have no 6.5 mm Rifles but I bought it for some light reading. Read it front to back and honestly not overly impressed. Was looking to get a 6.5 for the mosquitos up north but unless you hit the Nosler or the Weatherby a 140 grain bullet at 3000fps is kinda ho hum and for the big critters up north, I'll take something a bit bigger. Tons of information though. (actually like the 6.5-06)