hey guys, had some very good results using grapevine as the wood for charcoal, for the use in bp. found a super old article in a book awhile back. it said a premium bp could be achieved by using grapevine or pine cones if willow or balsa couldnt be obtained. just thought i would mention it for it has been a very good source for me. i have found through testing that it seems to be a bit better than spruce. alot less dense than goex. 35 grains by volume just weighed .9 grams were the same volume of goex weighed 1.7 grams. so this can be a low charge power wise if loaded in a bp pistol. pressing pucks is a great idea to increase density.