I havent had any issues. You have the option to zero it at 100 yards or 200. More accurate if you choose 200 yards though. Just have to make sure you tell the program which zero you did.
I have had mine since june and its been used as any other rifle i use. Still places a perfect shot at 1000 yards at the range. I shoot a .300 win mag. I am not a long range hunter but i am just having fun at the range.
I have also used different software options for 3 different bullets and zero still holds everytime.
My one complaint is the size. I was disappointed it didnt fit in my scabbord so now i need to find one that fits