Although H322 and RL10X are both great powders for 90 thru 115 gr. bullets and work well in almost all 6.8's, with that 20"+ barrel your Stag 7 should really like the slower powders like H335 for the heavier 110 thru 130 gr. And, with that good, lower pressure spec barrel, you could use the faster powders like H4198 or RL7 to make the lighter (85 and 90 gr.) bullets fly!
I really like the specs of that rifle; it should have both accuracy and high velocity!
I really like the specs of that rifle; it should have both accuracy and high velocity!