Good stuff Teeder.
It appears the 250g .338 also has a thick jacket that extends even further than the 210g.
Check out the Partition thickness on the 35 cal 250gr partition alpinecrick, wonder if they ran that lighter metal a little thicker to make the bullet a bit longer for a better b.c.?
My 35 Whelen puts those out at 2700 fps, would have to be a damn solid Elk load.
