The biggest bonus of using a common caliber is small stores that don’t have much selection usually have the common calibers, in normal times. So if you lose or need forgotten ammo on a trip it’s easier to find, normally.
In these crazy times the only thing left on the shelves around here is the uncommon calibers nobody is using. The “common” stuff sells out fast. Go figure.
Best caliber depends on the truck you drive. If it’s a Chevy you want a .260 rem as you won’t settle for nothing but the best. If it’s a Ford we know your not picky and anything, like a 308, will do....LOL
Have a great weekend.
SCG