on the 204,I bought 200 factory loaded 40 gr Hornady V-Max,that was before you could buy any kind of 204 brass,the Hornady brass lasted 5 more loadings with the 40 V-Max and a heavy dose of H-4895 for 3815 fps and an honest 5 shot average of less than .400.the primers started getting pretty loose after the 5th trip so I tossed them,butthe necks were still in good shape.
I found some 34 gr Win factory ammo at a hardware store REAL cheap so I got them and shot it up for the brass,and they shot about .800 but had pressure marks after the first firings and after neck sizing 16 of the first 20 split all the down the shoulder.
the Hornady brass was scary accurate after doing the whole nine yards,but if the Noslers are ready to load out of the box ,,well I hate turning necks,,and deburring flashholes..