Use a good old pair of diagonal cutters and squeeze slightly to get jaws to open up the coils a little and then cut when they fall between the coils. This helps prevent crushes. Follow-up by grinding the burr down on a sharpening stone (old way) or use a Dremel tool (faster). Run the cable through the end a few times to make sure it doesn't snag or grab. Good to go.

The best tool I ever had for this job I broke and that was a pair of Xuron wire cutters. The blades were really thin and got between the coils so well that it left almost no burr. I now use the diagonal cutters though (tougher tool).

Arny1811's post above mine is a good method to but use an old cable and still grind for that burr that is formed. One almost always is.