19-year-old Patrick Caines, of Clark, Wyoming was with a friend, cleaning handguns. Caines' friend was dry-firing the guns after cleaning to make sure they worked properly.
"He hadn't realized one of the handguns was loaded," said the sheriff. "Subsequently, Caines suffered a gunshot wound to the lower abdomen from a .41 caliber magnum revolver."
Caines was flown to a hospital in Billings, Montana where his condition has improved from critical to serious.
The sheriff added that the office "considers this to be an accidental shooting and foul play is not suspected."