The L C Smith Plans & Specifications shows the convergence to which they set their bbls. I would have to get it out to remember for certin but they are set for the bore lines to cross close to the muzzles. As I recall continuance of the axis to 40yds gives a divergence of 12"-15", which would be unaccepctable if it actually shot there. This is of course expected to be offset by the recoil of the gun. As the gun starts to move the instant the charge does & as a heavier load recoils more than a light one, we could not really expect all loads to hit the exact same spot now could we. This is of course not so critical with a shotguns pattern spread as it is with aa rifle. Divergences which would be unacceptable in a rifle may well be acceptble in a shotgun, considering both the pattern spread & the max range it will be used. A 4" divergence @ 40yds would be a 10" one @ 100yds. This would be acceptable in the normal shotgun, but not a rifle.
