I do clean from the breach with the barrel removed from the stock. I set the muzzle on a folded up shop towel ( barrel vertical) and give it 2-3 passes before changing the patch. With the muzzle resting on the towel ,the patch won't fall off and you can do as many passes as you want.
I don't know about a pointed jag. I use a .50 spinjag (http://www.spinjag.com/) for the KRB as well as my Lyman Trade Rifle. I've also used it on my .50 Kentucky pistol with great success.

Why do you need a pointed jag?
Just curious.