I'm not clear on what you want to do, but if you want something that will cut the end of your stock to round it to a dowel shape, but is limited in length, try a search for a "hollow auger". You can find old ones that are adjustable to the diameter you want. They are designed for use in a brace, so they tend to have a square end to fit the chuck. They work surprisingly well.
The end of the stock must be sufficiently pointed to fit into the auger to begin the cut. For a few pieces, a knife or chisel works for this task, but if you want many, search for a "spoke pointer", another old tool designed for that task.