Never measured a group so take my experience
for what it is but if you haven't tried your bench
test with all possible brands/loads you should.
My '94 likes the 150gr Win PP's best hands down.
If your rifle is as finicky as mine, it could make a big difference.

That said, I picked up a box of the new Win 150r PHP (Protected Hollow Point).
Plan on checking it out next time I go to a range but won't hunt with it until
it proves itself worthy of the whims of my rifle.
Anybody else tried it yet?