On Mon, 30 Jul 2007 23:37:02 -0700, Roger Shoaf wrote:
Assume one were to take a .357 revolver and load it with shells that were
reloaded with a primer only and without any powder.

Known as a "squib".

How far would the bullet get, only propelled by the primer charge?

Right about into the forcing cone, probably then preventing the cylinder
from being opened or turned.

If it makes a difference let's assume that the bullets are standard lead
round nose (no metal jacket.

So...why do you ask? (push it back into the case with a brass rod and
gentle hammer taps and yes, the other pipes are pointed at you while you
do this.)