Spent a couple hours on the 100yd range this afternoon, rained most of the time but that's better than being too hot!!! Shot 30 rounds thru the new 338-06 Ultra barrel, worked up a near max load of H414 and the 250gr Sierra Gameking BTSP for starters, don't know if this bullet will be hunted with, but I figured for $13 a box, they're good for barrel break-in, anyway!! I was pleasantly surprised that as I neared the max, the groups shrank considerably. I'm real happy with Wayne York's work, to say the least!!!