new to 20 gauge reloading

[J.B. Books]

Originally Posted by Bill Murphy

Thanks, I think. I guess the bottom line is "It's hard to blow up a good shotgun"

I doubt very much that anything I mentioned above would create an over pressure load. Substituting a CB 3/4 wad in recipe calling for a CB 7/8 wad for a 7/8 load wont change pressure, they are same wad with the exception of nub in the bottom of the shot cup of the 3/4 wad to reduce capacity. Adding a .070 nitro card beneath the wad in low pressure 10ga load isn't going to do much either. A 12 ga wad on top of the x10x if anything would likely reduce the amount of bore scrub which creates pressure. When starting out with a load that is 6700 psi there is room to be safe with that substitution. We are loading shotguns not rifles.