So all these years I've been told light pressure, lower velocity loads, it was based on information which many mistook. I can't recall any recommendations for 1300 fps loads. I do recall a lot of sub 1200 fps loads. And pressures in the 11k range are well above as well. I understand this was for specific hunting in long range or high birds. Maybe it was just to be kind to old stocks. 1300 fps who knew?