The rifleman makes the rifle, not the reverse.
Partly true. A good rifleman can compensate for a crappy rifle or a subpar bullet, but then again he normally won't have to because you seldom see a good rifleman using either one. One thing a good rifleman always does is optimize his rifle and ammo. Besides, we're talking about bullets, not rifles.
And I'd still rather learn the drift of a Partition than put my faith in a tinfoil bullet. But that's me.
IMO for smallish game like Coues or pronghorns at longish distances, placement is more important than using a "premium" bullet. For a shot like that, IMO it's best to use the bullet you've been banging steel with all year than to think you need a "premium."
There are some pretty good hunters here who regularly kill game with those tinfoil bullets.