Re: PAPER CARTRIGES
I haven't made any combustible cartridges since the mid 70's.... but what I did was make and use "flash paper." I found a recipe that I used. Sorry, I don't think I have it anymore but I know where to look and will post it if I can find it again. It makes a liquid that I would pour into a casserole dish. I took a sheet of onionskin paper, soaked it in the solution in the casserole dish for several hours, then removed it and hung it up to dry on a clothesline (indoors). When it was dry it had a slightly heavier feel to it and was a bit crisper - but only slightly so. I cut this up into rectangles. I wrapped the rectangles around a dowel slightly larger than my bullet size (When I was shooting my .58 cal I used a 5/8" dowel) then ran a small and very thin line of Elmer's glue down the seam line. After the glue dried. I slid the tube off the dowel, folded the base over and added a dab of glue to hold the fold. Later I poured in my powder charge, ran a thin wipe of glue on the bottom half of the bullet and then set the bullet in place on top of the powder. All that was left was to lightly crimp the paper onto the glue on the bullet. If I remember correctly I also used a twisting motion to make sure the paper was closed up tightly.
It all sounds more complicated than it really was. It was a slow procedure but I used to do up 50 or so rounds at a time doing them all one step at a time. Different calibers required different lengths of paper and I learned those by trial and error.
The "flash paper" was made to the recipe used by magicians to create sudden flashes of fire. It is NOT explosive but is an instantaneous flash.
Did it work? You betcha!
The glue never seemed to be a problem though that is what I was most concerned about when I started. When I fired a shot, the paper burned up completely, the glue disappeared, the bullet went downrange and the load was very, very consistent.
I used to use these in competitions when I was shooting an old Bannerman's Special .58 cal rebuild from CW parts. I did well.