Don't overlook the 7 X 57 if one presents itself. In a modern strong action it is a wonderful round covering a fairly wide range from 100 gr bullets up to175 gr bullets. It's be a long action, but can send a very effective projectile downrange with fairly mild recoil. It can be among all the other cartridges mentioned as a good choice for a smaller person in need of low recoil. Stay away from real lightwieght guns if your purpose is to avoid recoil.