Thin paper v thick paper?

[MIEagle]

If I have a choice between using a thinner tracing paper with a larger diameter bullet or a thicker tracing paper with a smaller diameter bullet, which would be better, provided they both have the same nice, slip fit in the bore? I have a 50 ft roll of Staedler tracing paper that was fairly cheap and also part of a ream of Seth Cole 9# tracing paper that was fairly expensive. I will be purchasing a dual diameter bullet mould for my .40-60 Maynard and would like to get it right the first time. Thanks.
Tom