Best mould ever for the big-throated Marlins. My 336 shot quite a few honest 1/2", 5-shot groups at 100 yards with that bullet using Felix lube softened a little with Vaseline. My pet load ran about 2150 fps. In fact, that bullet and Felix lube started me on the "extreme lube quest" because it wouldn't shoot well below about 40-50F due to flyers from lube coming off in chunks on the way to the target. Softened the lube a little for cooler weather, BINGO. Killed a few deer and a whole bunch of varmints with it, too.