I know this is an old post but I am going to add my two cents worth as there are a lot of us on here that shoot these rifles, Try 2 grains over max of RE-25 (107gr) for a MV of 3146. with 225gr TTSX (tipped) Good accurate load in ny gun shooting off a sturdy bench and 6-9inch Caldwell bipod with rear sandbag.Load your OAL as long as possible and still operate in the magazine. Load your shells carefully. I am getting 5 shot groups of .435" at 100 measured meters I have had this rifle pillar and skim bedded by Dave Jennings of Jennings outdoor sports in Pritchard B.C. Although I dont need it I also have a timney trigger on order that I am going to install in this gun; I dont see how it could possibly shoot any tighter. By the way I also have the NEAR single piece Triple ring mountinng system for my Leupold MKIV Long Range Tactactle 6.5X20-50MM with TMR recticles. The Near scope mounts bold to a Pictanney rail on the rifle. My groups seem to stay consistently tight These new tipped TTSX shoot like a house afire as they are a monolithic bullet of solid copper this could be the reason as they do not fly out of trajectory because of being ever so tiney out of balance. Thats my story and Iam sticken too it. Remember work up slow, I have spoken with the barnes people over the phone and the have reassured me that by carefully working up you can safely (most of the time) exceed their max recommend loads in their manual.
Cheers @ Tighter Groups: Eaglesnester