Says on the box that it´s clean and non-corrosive ... to be used in exactly the same way as PB.
The more grease/lube I put into the case, the less space there is for the powder (?) (But I´ll try out a larger quantity and see how many rounds I can breech). As yet (funnily enough) the barrel on the Werder is `mirror´, minty and looks almost better than new. Can´t shoot it for any length of time as the patience of other people on the range wears thin pretty quickly as the visibility diminishes in clouds of smoke.