I just started a MRAD thread in this forum a week ago. I haven't shot mine yet, with it being winter here in the rocky mountains and all. I bought one in 300 win mag and I plan on a 338 lapua, 260, 308 barrels. Its a boat anchor, but solid as the day is long. I'm impressed!! Check out my thread you may have more luck if you ask the German? Don't know what caliber he has.