might be good to keep your ammo in a faraday box if you store larger qtys of it... find out how at...http://www.textfiles.com/survival/emp.pro (tks again youngunz for the link!)One area of concern are explosives connected to electrical discharge
wiring or designed to be set off by other electric devices. These might be
set off by an EMP surge. While most citizens don't have access to such
equipment, claymore mines and other explosives would be very dangerous to be
around at the start of a nuclear box if they weren't carefully stored away in a
Faraday box. Ammunition, mines, grenades and the like in large quantities
might be prone to damage or explosion by EMP, but in general aren't all that
sensitive to EMP.
either way, might be a good excuse to invest in some of those fine surplus metal ammo cans.