FWIW, my best friend from 3rd grade asked every other season or so to sight in his rifle. A motorcycle accident messed up one arm/hand - the use of it, and he trust what I know about guns and shooting.
His rifle is a BAR in 300. He wanted advice on ammo, in 308 and '06 many shoot 165s but I predicted a 180 might do best at 300 speeds SO:
FIRST I dug up an article, and guess what the test rifle was a Sako, maybe a M75 I think, but it was a Sako and they tested ALOT of ammo brands/types/bullet weights.
Conclusion, the WW 180gr Ballistic Silvertip Supreme ammo was #1, so I suggested my friend use that ammo.
Results, it shot VERY Good, the BAR may produce a flier here and there unlike a bolt, but suffice to say, I had some VERY tight grouping at 200 yds where I zero.
I would highly recommend that load to try.
Good luck and btw, WELCOME to the 24hr forum! If/WHEN you are ready, rolling your own ammo can be alot of fun, highly educational, and you can tailor some tackdriving loads that you will take pride in when you hunt.
Good hunting!
