I prefer the 150 gr Barnes TSX BT bullet for anything/everything
I hunt with the 7x57. With a Pac-Nor 22" barrel fitted for the
M70 action, the cartridge does very well with 120-160 gr bullets,
in terms of both accuracy and velocity. But the 150gr TSX is my
solution over a lightweight bullet that gets pushed around a bit
at 300+ distances, and certainly has no difficulty staying together and finding it's way to the vitals, regardless of distances.