Great news Shato. I would do two things. First, try the IMR 4831 powder and the new 130 grain Sirocco bullet. I am currently using this load in my 6.5-'06AI and it is sensational......not that 1/2 inch groups are bad!!! I got 30 to 50 '/sec faster speed with the IMR and no degredation in groups. You have what is probably the finest 300 yard deer rifle in the world......you can make it a 400 yarder with the Sirocco bullet with a BC of .571.....yes .571. Low recoil, near Magnum performance, low cost....what more could you ask for. Pic of my group attached. Regards, Rick.