It was mentioned above but no one supported it - take a good look at the .405 Winchester. Brass is available as is factory ammo again and you have Teddy Roosevelt's endorsement of the round which he took to Africa. For deer and hogs it will generally shoot flatter than the .45-70 and has a better bullet to retain velocity. In fact, it is not uncommon to find double rifles from Europe chambered in this caliber. No question the 9.3x74 will get the job done well if you don't mind using European developed cartridges. Both the 9.3 and .405 are on the strong side for deer unless you include elk for which they are quite suitable.