I don't think there is any reasonable way to know the chamber pressure of a load picked out of the air or off the internet, or even out of most manuals.
But to get you in the ballpark, that is a full grain BELOW the Lyman STARTING load for a 150 JSP at 32,000 CUP.
So I am betting you are well below the pressure of the 7mm the gun was originally built for and have a safety margin even with Spanish gunsmithing.
|