We don’t often think in these terms anymore, but when I started down the accurate gun path, it really mattered (to me at least) how two or more different options grouped at distance, on a constant hold, where I could not see bullet holes, and was not attempting pull the trigger in the same wind condition, but did attempt to give both guns or loads a similar wind challenge. With enough trials the results become reliable.
I considered the size of the different groups to be something of a litmus test as to the pure efficacy of the options I was considering, BC, bullet consistency, etc., before introducing to that mix, hold offs and waiting.
Looking at actual groups punched in paper this way on windy days, deflection was by far the greatest contributor to a group’s size, no surprises there.
If one starts out picking an option between several that empirically produces a larger relative group, uncorrected, can it always be overcome with superior reads, just because one or two guys usually can? This is where a shooter has to differentiate between the merely plausible and the realistic, on their own shooting regimen and desired outcome. For me, the current answer is no and I see very little downside in a magnum over my trusty .284’s, but potentially with greater wind a healthy upside against the typically-used magnums, let alone .284s, such as Sunday.