Phil, In the end, if you can tolerate recoil from a typical bolt action .458 Winchester, (Model 70, etc.) with full pressure, 500 grain bullet ammunition, you will tolerate recoil from an 11 or 11.5 pound 500 NE, firing the original spec 570 gr loads just fine, even though technically, the typical .500 NE double rifle generates a bit more recoil. Since I cannot tell the difference anyway, such small difference in recoil between the .470 NE and .500 NE would not be enough for me personally to favor the .470 but, the ammunition availability might persuade me (probably not, LOL). In terms of smokeless or "Nitro" double rifle cartridges, anything above the .450/400 kicks pretty hard but even a wimp like me can shoot the .500 accurately, for a few shots anyway. Cheers, Velocipede Anti-Dog. PS: If you read the book "Hunter" by J. A. Hunter, you will choose the .500 for sure, heh heh.