Do not load them backward. The pressure from the ignition could cause them to open inside the barrel and cause barrel damage or possible rupture of the barrel. This would be dangerous to load and attempt to shoot a projectile in a totally different way then it was designed. Get some wad cutters if that is what you want to shoot.

I have never shot a deer with a wad cutter out of a muzzleloader although some of the concials I shoot are flat based and almost flat nosed..