100x 243Win Lapua brass. I bought it new from Reloading Solutions (at great cost!) and it's been only neck sized and fired twice in low pressure development rounds through my now sold Sako 75 Finnlight. In fact, 21 of the 100 have only been fired once as I pulled the bullets when I sold the rifle.
50x 243Win brass, comprising 46x Lapua, 2x RWS, 1x Norma and 1x Winchester. Twice fired.