I've worked up loads for family members in a number of different bolt action '06 rifles including an M1917, a Parker-Hale, 2 Remingtons, 3 Savages and Tikka - none an XL7, but always found the same load (+ or - .3 gr) to be quite accurate in every one of them so I think it's worth a try: H4350 57.0gr, CCI200 LRP, and Hornady 165gr Interlock SP - it's also proven itself as an excellent performing hunting load. The usual advice of starting a bit below and working up apply of course.
I've also used this load successfully with slight variations in bullet styles (165 Interlock BTSP and 165gr SST) but not every rifle would shoot the boat tails as well as the standard flat base. It's worth experimenting if you so desire, but if you try the BT design and don't get acceptable results try the FB. OAL may be different with each rifle, somewhere between seated to the cannelure and magazine length.