I am not getting your angle here and apologize for that. Felt is a generic term nowadays, it was originally made out of 100% wool, now there are synthetic blends that are not necessarily optimal for MLoading, the density of it crucial too. DuroFelt is really good on thickness and density and have marketed it for ML specifically. The gent you are referring could be using patch but I have never seen an 1/8 thick patch, I don’t know anybody that’s call a 1/8 felt wad a patch but is possible that the person you are referring to on your post uses a folded patch under the bullet in lieu of a wad, it is still a folded patch. I have done lots of experimentation with folded patches, wads and paper patches bullets and still want to learn more but have never seen a 1/8 wad called a patch. A patch is a patch and a wad is a wad!