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Can't take mine to the range... Last time the bastard went nuts in the truck trying to find me and the possums (must have thought there was an Invasion) and locked the doors on me!!

All well and good till you don't take the rifle and they don't want to go home cos they have done their job and expect you to shoot the damn thing!!

Sounds like you have a good handle on what to do already. One other tip I found useful is if the noise relates to something exciting, my old dog goes nuts when the rifle comes out as he knows we are...