A friend of mine, a Knife maker and gun smith, does most of his hunting with a scoped stack barrel - Merkle, I think, 16 bore over 7x65R. The 7x65R has a VERY thin tube, but if shot quickly, or slowly, spread out, shoots well under 1" at 100 meters, handheld using bags for hand support - horrible Zeiss scope too, - pointed tree trunks for crosshairs - HA!