There are more than 15 or so twist barrel SxS's at my club that get shot regularly- and mind you I'm not telling anyone else what to do- but if the gun looks sound, barrels ring, are tight, no deep rusting- we just go ahead and shoot them with low pressure loads [ below 7000psi ] . I worry more about shooting an action loose than blowing a barrel. Mind you, it's just my opnion. Paul