I never heard of greasing a paper patch. the patch works like a jacketed bullet and you woulden't grease them. the paper keeps it from leading, also by sizing you are defeating the purpose of moulding your own, which is to have a bullet slightly larger than the bore for a good seal.
I paper patched 30-06 bullets and had no problem at all with leading or accurcy.(no grease) mv 2500 fps.
patched 30-06 45-70 50-70
