I believe there are two different regulation issues. First issue would be how close the barrels shot to the same point. When I mentioned 4" that was supposed to be the maximum difference between the POI (point of impact) of the two different barrels with the hold point being the same.
The second issue would be where the gun shoots for the individual. I guess IM's low shooting Grulla could have been placing both barrels within 4" of each other. Maybe it was regulated for someone whose cheekbones were at the corners of their mouth.
Barrel flipup was mentioned in a previous post. In the Winchester Model 21 book the author memntions after some years after it's introduction Winchester started flipping the barrels up to make 21s shoot higher. Looks like they could have just stocked them higher!
Best,
Mike
Best,
Mike
