I have been farming some with my bard and I decided to break out some Fire Horns and see how they worked. I noticed within 10 uses (at most) they would just break. I was looking up information on them and found out they were supposed to have a 1% chance to break on use. Now either I'm winning the fire horn breakage lotto or something is wrong. Reference Link, http://uo.stratics.com/content/basics/firehorn.php
I looked into this too + found that almost every source about Fire Horns states that they both 1) consume 4 Sulphurous Ash per use, and 2) have a 1% chance per use of breaking. However, I also dug up some very old material from right before and after the Fire Horn was introduced into the game, and it appears that originally they consumed 15 Ash per use and only had a 1 in 250 (0.4%) chance of breaking per use. I haven't used them here on Ren yet but it appears they were also originally designed to do no harm to innocents (blues, guildmates, faction allies, or their pets), although I don't see that stated on the current stratics page. References (reprinting Developer discussions): http://gatecentral.de/ultima/uobody.php ... =1010&ug=1 (1/4 way down the page under "Vex.. the fire horn?") http://www.gatecentral.com/foren/news2f ... 432&flat=1
During the AOS period of UO, they consumed 4 ash, during UOR when they were first introduced they used 15. Your success change when using them is tied specifically to the musicianship skill. The damage done to the target is related to the 4 music skills. The chance to break during the AOS era was 1 in 100. The chance to break in the Renaissance era is 1 in 8. These items have not been reviewed by the staff, this is just the information as it is coded now.