I once bought a box of Commercially produced reloads. This
is when I had been hand loading for about a year, still pretty brand new to hand loading.
Im drawing a blank on the name but I know I still use the brass from them to this day, lol.
I’ll have to look in the cabinet.
Anyway.
Generally speaking I don’t use others’ hand loads.
I do, however, load .308 for my buddy on occasion.
I wouldn’t do it for just anyone, but in this
instance it makes practical sense.

What I don’t do, is load up a box and send him on his way, no.
I may load some ammo and be working up a load, But I’m the one who shoots first and makes sure all is good before I turn the rifle over to him.
This is practiced for each increment in powder charge or for any component change.