That ss10 will leave a .223" wound channel all the way through the deer- good luck recovering it unless you have snow. If you must use a .223 you need to use an expanding type bullet made for big game. Bullets of 60 grains or more. Nosler makes a 60 grain Partition, Barnes makes a 62 and 70 grain TSX, Winchester a 64 grain Powerpoint, bullets like these are the only suitable options for deer hunting with a caliber intended/designed for varmint hunting and wounding humans in combat scenarios.