I have the 25 X LER and a friend has the same Kowa with the 20-60. The higher power is useless. The slightest shack or mirage wipes out the usefulness. At the matches I'm shotting all have pit service using markers. 25X is more than enough.
I did get my setup from Jim and I'm more than happy with it and his service.
Agree with the above. Too much mirage at the higher powers. Unless you have a very sturdy tripod, even a 5-10mph wind will shake the spotting scope enough to distort the image. If you are not required to use a black(NRA HP) target, try lighter colored/high vis targets. They show bullet impact much better. dozier