I would rather someone say "I don't know" than make something up or just give a non educated opinion. Some are worse than others, but there was an idiot at WM once that asked me when asking for a box of 22's if it was for a ruger. I said yes it was. He then said "those can make it back-fire", I then proceeded to ask him what he meant by backfire. Well he did not know . I then told him there was no such thing in a firearm. Then I checked out for the ammo. Holy crap I hate people who have to say something when they have no idea. Just get the ammo and check me out. I don't even care if you say a word at WM. Sorry I decided to rant.
he might be smarter than you think. if you go to the OSA ammo forum you will find a thread about certain 22 ammo bought at walmart that backfires(blows back of case out before bolt closes).