When I was old enough to take a gun out by myself, the only shotshells were paper, and loading paper hulls was initially my attempt to recreate the smell and nostalgia. I began rolling my own when I found a nice old hand roller. Since then I learned there's more to it, but, like Milton, I like my shells to look nice too.
Apart from the appearance, rolling gives advantages in lower pressures for old guns.
I've pattern tested lots of these, and found that overshot cards need to as thin as practical in order not to skew the pattern. or, doughnut hole them.
Another detail of importance is that the roll be physically uniform all the way around. If not, the mouth opens up first at the point of least resistance, and the pattern is skewed. The depth of the roll does not need to be any more than what it takes to do a complete 180 degree turn. More, and it builds pressure opening up the mouth; Less, and there's the risk the loaded shell will pop the card loose and spill the shot. Plastic hulls need reconditioning after fired. Reloaded paper hulls are never as pretty as they were new.
All I need now is time to get out and empty a mess of these shells.
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