livbucks.. they come pre lubed. With a very sticky lube I might add. They can be loaded without a short starter. You can actually feel them set in the powder charge when you seat them. They do not seem to come off the charge the few times I have checked them. They are as accurate as a roundball in my T/C Hawkins Flintlock.. and they are a little heavier for better down range slap...

So far I have noticed no leading, but I do bore brush the barrel everytime I shoot with a quality solvent....