Tightening patterns?

[Mr. 16 gauge]

Thanks roundball, for your insight. However, I'm a bit confused after reading point #2. You say:

2) Minimal amount of wadding over powder to minimize their effects on the shot column at muzzle exit…the larger amount of wadding material that there is, the momentary high pressure muzzle blast at exit can drive them forward into the shot column; I don’t use any OP cards…just various cushion wad material like prelubed wads from Circle Fly or Oxyoke;

Are you saying that you don't use any cardboard wads over the powder? If so, do you have a problem with the lube from the felt wads soaking into the powder over time? Does thickness of the OP wad make a difference (thinner wad cause less problems than a thicker one).
Thanks in advance.............