The problem with 35 Whelen and 9.3X62 in the states is like has been said, there isn't a lot of room for either. 270, 30-06, 338, 308, 45-70 and other rounds blend together to pretty much fill all voids so the stuff never was pushed by American gun manufacturers and ammunition is generally not commonly available. When I can go to the local retailer and easily get the other rounds, these rounds are not generally considered no matter how good they are. We've had a lot of new ammunition introductions (especially the short magnums)in the last two years and no matter how good they may be, most of them will never catch on.