I lucked in to about one hundred 30-40 Kragmilitary at a show once from an acquaintance. The dates were everything from 1899 to much later in the '30s. I pulled all of them apart to at least change the primers. I decided to change all the powder AND the primers because even though there were a few crisp clean cases with fresh looking powder, some were clumpy and solid. Some had turned back to liquid.