Very nice rifle mate!!
Give some 123 / 140 A-max a try too!!!
I usually measure the chamber and work a load with the bullet seating on the lands , when i find the accuracy node or nodes i usually re-test to make sure they were not just a lucky groups!!
When i have found this node i usually load up some on the lands again and then some at 5 thou back / 10 thou back / 15 thou back - right up to 50 thou back .
I also load some 5 thou into lands / 10 thou into lands right up to 20 thou too..
This is to see if i can " tune " the load , and when this is found - i then load more up with that tuned load and re-test at 100yds to confirm its a good load , i then test at 200 / 300/ 400 / 500yds and further to get real time groups and real time drop data to see how the load is performing and myself too!!!
With the exception of my Parker Hale TX1200 - i have found that the A-maxs in my rifles loved it on the lands!!
Some rifles for reliable feeding i know you may be restricted to magazine length so for hunting you may be restricted to this or single feeding!!
nothing special just some pics of loads done using this method..
Just a recent 3 shot group in windy conditions @ 200yds , shot off the truck roof with a harris bipod front and sock rear bag with my 280 Ackley and 162 A-max...
All the best...