I use the 100 grain Partition in an old Ruger #1 .257 Roberts @ 3000fps and have never in 28 years fired a second shot on whitetail deer.
The same great results on everything else I shoot with the 250 Partition in my .338 Winchester Magnum.
I also use the 168 Custom Competitions in a heavy .300 Winchester Magnum to shoot great groups out to 600 yards.
If your rifle likes the Partition there's no better hunting bullet.
~ Bret N.