About 8 months ago after getting into the .338LM game, I hand loaded a .338LM round with no charge in it. This is the first time, in ten years of hand loading, and tens of thousands of rounds, I've ever fouled this up. Oddly, since then, I have experienced one in twenty of these magnum primers not igniting, or misfiring in .338LM. Never once in 5+ years of .300WM loading. Anyone else have this problem?