Soon after we camped Br Holman was driving up the [-] with his gun in his hand. He went to punch a Horse with the musel of his gun. The lock Caught in his cloths & discharged into the best Horse there was in camp owned by president Young called his John Horse. He lived A few hours & died. There are many Accidents happen in that way by caring loaded guns with caps upon their tubes.
[Source: Wilford Woodruff's Journal: 1833-1898 Typescript, Volumes 1-9, Edited by Scott G. Kenney, Signature Books 1993, http://amzn.to/newmormonstudies]