Re: 265 gr. Lapua/Edge data TSX needed
I ran R/S Magnum up to 97 gr. (again, this is with Hornady brass which has a bit more capacity than Lapua), producing 2833 fps, ES=3fps. Groups were around 3/4moa. This is a factory Sako barrel, not a custom. Getting better than 3/4moa might not be realistic.
I ran RL-25 to 94 gr. in same brass, producing 2813 fps, ES=11fps. and again about 3/4 moa.
I don't bother with less than 1-grain increments on a case with this much capacity. One full grain only boosts velocity by 15 to 30 fps. I can't see that .1 grain would be noticeable at all.
"Fenced yards ain't hole cards and like as not never will be, reason for rhymers and old five and dimers like me."