war(s), combat, brass, lead....
In the mid to late 2000s, I thought the "dry spells" were caused by the US armed forces in SW Asia buying up all the ordnance materials(brass, lead, alloy, etc). Many common handgun rounds like .45acp, 9mm(9mmNATO), .40S&W, etc were priced higher or sold out.
When the troops started to filter out of Iraq(2011) prices & supply seemed to go back to the old levels.
Every 2nd matters.