Wating period for ATF 4473 Form?

I went to go in and buy a shotgun and just as I was turning in my paperwork the guy noticed that I put a different mailing address than my license said so he told me the application was void and I had to come back later (like the next day) oh and it was just my second home.So I did come back the following day and a... show more I went to go in and buy a shotgun and just as I was turning in my paperwork the guy noticed that I put a different mailing address than my license said so he told me the application was void and I had to come back later (like the next day) oh and it was just my second home.So I did come back the following day and a new guy told me that if I messed up on the 4473 form, I would have to wait 30 days before I could purchase the gun. I've recently heard otherwise from other sources and I just want my gun for the heaven's sake. Can I go to a different store and buy the same gun or will I be denied when they background check me? This happened last friday. Thanks
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