The most consistent loads for me in the cart out of many diff 7RMs has been 150NBTs over 66g R22 lit by 215s in R+P or WW brass or 69g H4831 under 140NBT or NAB. The R22 load is my first pick in every 7RM I've loaded for and more often than not seems to be a pet load. I have 3 7RMs currently and the R22 load shoots very well in all 3. Not to mention that the 150NBT is an excellent whitetail pill.
