I'm sure that I have done that for dumbell shapes, or a too large a sausage, say 14mm for ovaloids.
In fact on a 'compatible' nozzle and rolling table, say 12mm, if the gun compresses the base mix, as they are extruded they will expand slightly and be slightly off shape as well.
I used to air dry unboiled base mix balls totally, mixed with water and the other liquids, to get a fast breakdown, basically like the ball pellets that were available at the time.