Shortness of scope tubes can be a problem. I remember my alarm about 1980 when I bought a Kahles 2.3-7 to put on my new Sako 338. The L61 action was way too long and the first five gunsmiths I spoke to had no answer. Finally, I discovered a bloke called Jack Millar lived just across the creek. Jack said said it was not a problem and just inverted two Redfield extention mounts. The setup looked good and has worked fine ever since.