I see this from a different perspective. If the firearm(s) were unloaded and secure (locked up). That is not a concealed carry--it is a transportation of firearms--which (as far as I know) as long as you are the legitimate owner and you are proceeding to/from either a scheduled match or a residence of yours--you are covered by FEDERAL law which supersedes any state laws.
As for not revealing that you have weapons--that most likely will go badly for you the way I see it. If the LEO asks if you have any--probably his background check already revealed something about firearms would be my guess--though I don't know how widely that info is shared between states.