Reverend Al wrote on Jan 13
th, 2020 at 2:33pm:
Just curious what you are using in your black powder .40-70 loads? Any card wads, poly wads, fibre wads, grease cookie? Still need to do some fine tuning on loads for my Ballard Pacific in .40-90 ...
Don't know if that was directed to me or Bulseyetom, but I nearly always use a card wad, although I vary between tablet backing or thin milk carton. Varying amounts of compression, but that seldom seemed to improve things. I generally used a very long drop tube of about 30 inches.
Almost always employ a grease cookie, because I was shooting in the arid southwest, and the fouling caked terribly hard. The goal was decent grouping without needing to clean between shots for at least five rounds. If using the cookie, I wipe off the base of the bullet carefully, and use a single disk of waxed paper in an attempt to keep the cookie from sticking to the bullet.
One thing that always mystified me was that the grease cookies could often be found on the ground ahead of the muzzle, in almost unchanged condition. How could this be? And this with SPG or other fairly soft lube, having endured the pressure and heat of firing, and frequently in hot conditions. I even experimented with only a wax paper "wad" or very thin layer of beeswax between the cookie and the propellant, but the little grease wads could still be recovered. My desire was that the lube be vaporized and mixed with the fouling to keep it softer in the bore, but I never managed to achieve that.
Puzzling...