No experience with the 30 cal 200, but I made the mistake of hunting with 250g GK in a 338. At 2750fps, these things ice picked 3 elk and a deer until I moved back to tried and true partitions. 3 large cows averaged 200yds before collapsing from center of the lung shots. Fortunately, snow on the ground facilitated very light blood trails. I called Sierra and was told 300yds was too far to be shooting given the harder lead used to construct these bullets. I reminded him they specifically market them as ideal for long range hunting....which this was not. If they’re marketing this bullet as having harder lead to control expansion, I’d be wary and just used partitions. FWIW, I love the performance of 225g GK in 35whelen. They’ve become my go to bullet for hunting whitetails in the woods. Some might claim they’re actually a bit soft.....
Agreed about that 225 SGK in the Whelen. It straight pounds WTs from the Whelen.
