I am getting close to retirement and trying to get some ducks lined up in a row.I do have a 4 lb jug off 2400 powder from 1983 that still seems to be OK but I do not have a chronograph to see what if any loss of velocity it has.I have been looking to buy some bulk powder for my pistols and rifles along with 500 pack bullets and 1000 primes to take some of the bite out so during retirement I do not have to spend so much to enjoy shooting.Anybody ever have issues with powder that has been stored for say 10-15 yrs as long as its dry ? Was planning on buying 4 lb jugs for my hunting rifles and pistols.