Can't forget the lo-pro ear muffs for riflery.
Need to bring plenty of .223". Preferably already in mags, because time spent loading is time that wasn't spent shooting.
I need to bring my Ross and at least one other rifle. I haven't shot any of my Finns yet (M91, M28, and M39,) so if I can dig out my non-corrosive 7.62x54R, that'd be awesome. In fact, if I can find that stuff, I'll take the SVT-40, too. If I can't, I'll just bring a bunch of .30-'06 and shoot my M1917. I have a bunch of 8 mil, so maybe the FN-49 and my Gew.98?
Don't forget sunscreen!
Mebbeso bring a revolver that's fun to shoot at longer ranges, like my Model 544. A 5" .44-40 N-frame is a pleasant long-range plinker.