Oh my.
You tailor the boolit to the gun and what you intend to do with it.
A pure soft lead paper patched spitzer will work fine... if it is going fast enough when it hits whatever the intended kill is. Or maybe you need a bit of a flat point to get expansion going at the intended range. Or maybe you are shooting close in and want a big flat point. Or maybe you want a little bit of a flat point to create a shock wave that the larger diameter boolit flies behind, like as with a Lyman #375296 (ah ha, surprised some with that idea). It all depends upon how fast, how soft, how accurate.