Irish style shot chargers. Mid to late 1800's is dead on. They are off a set of bag flasks worn around the neck to equalize weight. Could have been one for shot, and one for powder, as loading in equal volume was a common rule of thumb, also the measuring plunger looks slightly different on one compared to the other. The leather portion would have been similar in style to timekillers top most picture. Cool relics from the heyday of muzzle loading shotgun. Just for interest sake, here is a pic of mine..an 1846 14ga. by Blissett of London, which I hunt with regularly. Pic was taken last October. Nice find!
Elee