Hi Guys. Another question from South Africa.. What is acceptable case head expansion? I have a custom .240 Weatherby and load Somchem S385 powder. [very similar to MRP] One of my Favorite hunting loads is Norma Brass, CCI 250, 85gr XBT in front of 57gr S385 for 3686fps. The average increase in diametere over the belt is 0.01mm [sorry for the metric] every time I reload the case. I know that this load is quite hot but was wondering what the actual pressure was like. The primers are nothing to write home about. Accuracy is good and it is deadly on 350yrd Blesbuck. Let me know what you think.