So, the ringing potential can be mitigated by filling up the cartridge with Dacron,over the powder,to the very top and then inserting the bullet?
Does the backing rod melt away before the pressure hits the bullet thus negating it's taking up all the space between powder and bullet?
Anyways,I'm shooting an old black powder double. Late Victorian age. I use the IMR 4198 powder and a hornaday 300grain bullet.