When Eddie and Arnold pay a visit to Jigger, after he stops shooting at them, Eddie and Arnold approach him. Jigger is sitting in a chair and holding a shotgun on his lap and not moving. A few shots later, the shotgun is in upright position with the butt on the ground. After they look at Jigger's feet, there's no sign of the shotgun so he must be holding it on his lap, again.
Jigger can be heard pumping a shotgun between shots, but when we approach, we find he has a double-barrelled shotgun, which makes virtually no noise during reloading.
When the six committee members get out of their three cars at the dam, we hear eight doors slam.