It's been my experience that the guys who work in gun shops are some of the most ignorant people that I speak to when it comes to guns. The guy at the gun shop is the LAST guy I will ask for advise.
There are of course, notable exceptions but typically I find them to be macho redneck buffoons. You should research yourself, or at least protect yourself by going to Bradis
You evidently don't shop where I do.