I went with the 6XC after the same delema. 6lap brass is tough to locate right now. 6XC holds 3 grains more then the Lapua but 7 grains less than the a standard 243. Easier on barrels then the 243AI brass. XC can be made from anything 22-250 up to 308 easily. Lapua makes 308 Palma brass with the small pocket. Should not have the ignition problems once formed down to XC.