Heck I have been shooting 300 grain Hornady's with the funny coating so I guess I will cast up a bunch in the 310 grain GC style and see what happens. I am pushing less than max by a bit so may actually pick up some max velocities if they will stay on target with current or increased loads. WC 680 starts to work with this bullet weight in the 44 with velocities comparable to other recommended powders.

Unfortunately I get to shoot very little at 200 yards plus, but sure have fun when I get the chance.