A thick patch is harder to get down the barrel...thus when one loads the pistol it puts strain on the stock, specifically right at where the stock becomes a pistol grip. Too much strain and you can break it.Grumpa said:Just curious, Zonie, why the admonition against "thick patches in a pistol. Especially a smoothbore."?
And what would constitute a thick patch?
As for the smoothbore I suspect the reason to be that it is because it is harder to get an overly thick patch down a smoothbore than a rifle. The rifling gives a bit of extra space for the patch, without it there is nowhere for the excess to go. Too thick a patch and you might end short started and incapable of seating the ball.