P.O. Ackley, Date of Birth, Place of Birth, Date of Death
TweetP.O. Ackley
Gunsmith, author and columnist
Date of Birth: 25-May-1903
Place of Birth: Granville, New York, United States
Date of Death: 23-Aug-1989
Profession: gunsmith
Nationality: United States
Zodiac Sign: Gemini 
About P.O. Ackley
- Parker Otto Ackley (May 25, 1903, Granville, New York – August 23, 1989) was an American gunsmith, barrel maker, author, columnist, and wildcat cartridge developer.
- The Ackley Improved family of wildcat cartridges are designed to be easily made by rechambering existing firearms, and fireforming the ammunition to decrease body taper and increase shoulder angle, resulting in a higher case capacity.
- Ackley improved not only standard cartridges, but also other popular wildcats, and was the first to create a .17 caliber (4.5 mm) centerfire cartridge.
Read more at Wikipedia