i went out in yard to play with this ISO-HEET.i took a piece of 14 inch metal. i heated it with propane torch as hot as i could get it. i then poured and set a patch with ISO-HEET on it. i waited. the patch dryed right out but did not catch fire. this was way hotter than a muzz barrel would ever get shooting.99% alcohol did not ignite. not to say it would not but it did not in this test. i then took a match and threw on plate, and the patch slowly caught fire.