Yes it does.
The easyest way to explain this is to compare them to a garden hose. If you turned the water on full blast and took the nozzle off the end you'll get a lot of water gushing out but it doesn't spray out very far. If you put the nozzle on and turned it down to a fine stream, your putting just as much water out as you were before but it's sparying out 3 times as far. If you had a matched set of calls made of the same woods, the long box would carry the sound out twice as far as the short box would. As you play the calls there might not be much sound difference between the two, but as you run them it compresses the sound into the sound chamber. With the long box having more space it will hold a lot more sound and will carry a lot farther than the short box will. The short box may sound louder as your playing it but it only has half the sound trapped in it then the long box does.
Dodge County NWTF Chapter
WI. Youth Turkey Mentor
*Safe Hunting Is No Accident*
It takes One Second to be Stupid, a Lifetime to be Safe.