Most hunters aren't reloaders or rifle looneys, so they buy their rifles and ammo at a big box store and go blissfully on their way.
Or not very blissfully, now and then--and now is one of those times.
When this thread popped up I was going to tell you that I shot a fox with your old 257 Roberts a couple of weeks ago. 75 grain VMax over 42.6 grains of Varget in a Winchester +P case and CCI primer. It still has one of those optically inferior Leupold VX-II 2-7x33s on it and after 18 years it still tends to send the projectile on its way to a POI close to the POA. I was in a hurry, so I didn't throw anything over the hood of the Sport Trac and it got another muzzle flash character mark.
I was in a Wal-Mart last week and saw a guy buying every box of ammo in their display case. WM was selling at the regular prices and no limit on the number of boxes that one person could buy. I'm sure that he was buying low so that he could sell high. Just as in all aspects of life, if you fail to prepare by default you are preparing to fail.
