I also highly recommend non tsa locks. I ALWAYS request being present for the inspection and will only allow my case to be opened while present. Every airport is different, some require your presence, others dont want you present. I always ask and have never been told no. With a gun, scope, spotter, rf, binos and accessories all in one case (pelican 800) I wont use tsa locks period and have never had an issue as it would take months to replace everything. Tsa laws require you to be the only one to unlock your case anyhow. You have a bundle or money tied up in flying, cases, firearm(s) and everything else you're traveling with. A 15-30 wait on hold is well worth the phone call to your airline to answer any questions including if they allow ammo in the case or if it has to be in other checked baggage.