Popular YouTuber Kentucky Ballistics nearly lost his life after his Serbu .50-cal rifle explodes due to a 'hot round' during a recent test. YouTuber Scott Allen DeShields Jr., better known as Kentucky Ballistics, is all about going big. With more than 1.5 million subscribers, he frequently shoots .500 S&W Magnums, .50 cals, and even elephant guns. However, during a recent test, he nearly died when his Serbu .50-cal rifle exploded due to a “hot round.” .50-Cal Rifle Explodes During Test