Similar to as above: it really depends upon who reloaded them and how.
I'd never fire a reload from someone who uses a progressive press unless I knew for sure they were using multiple checkers.
When i reload i use a loading block and a powder measure. Every fifth load gets weighed and all get flashlighted before any bullet is seated.
Also, every batch has powder charge, bullet weight, and COL. I'd never give or use rounds loaded past 50% charge.
Only if I’m there while the loading is being done. No chatting just watching and checking. Re-loads from gun shows and people saying here try this I just can’t do it.
I do not shoot other peoples reloads nor do I give other people my reloads. If I'm at the range with someone, I may try a couple of theirs, but not many.