Thanks for all the responses guys. Makes sense that they were Belgian made rough forged tubes, although I was under the mistaken impression that many of the American higher quality makers sourced domestically for fluid or non-composite steel. A lot in Houtchins' book on the Hunter Arms deals with Sanderson Bros. in Syracuse, but Parker seems to have imported all its barrel steel, composite and fluid, from Belgium, and I recall seeing the LLH stamp on both Ithaca and Fox barrels. So, for the time being I will forget about it, and see what the tight cylinder bores do on the pattern board with modern shot cups. Thanks again.