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Factors affecting penetrating captive bolt gun performance

By T. J. Gibson, C. W. Mason, J. Y. Spence, H. Barker, N. G. Gregory

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Captive bolt stunning is used for rendering livestock insensible at slaughter. The mechanical factors relating to performance of 6 penetrating captive bolt gun (CBG) models were examined. The Matador Super Securit 3000 and the .25 Cash Euro Stunner had the highest kinetic energy values (443 J and 412 J, respectively) of the CBGs tested. Ninety percent (27/30) of CBGs held at a government gun repository (United Kingdom) were found to have performed at a normal standard for the model, while 53% (10/19) of commercial contractor CBGs tested were found to underperform for the gun model. When the .22 Cash Special was fired 500 times at 4 shots per min, the gun reached a peak temperature of 88.8°C after 2.05 hr. Repeat firing during extended periods significantly reduced the performance of the CBG. When deciding on the appropriate CBG/cartridge combination, the kinetic energy delivered to the head of the nonhuman animal, bolt penetration depth, and species/animal type must be considered. It is recommended that CBGs are routinely checked for wear to the bolt and barrel if they are repeatedly fired in a session.

Publication Title Journal of Applied Animal Welfare Science
Volume 18
Issue 3
Pages 222-238
ISBN/ISSN 1088-8705
DOI 10.1080/10888705.2014.980579
Language English
Author Address Department of Production and Population Health, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield AL9 7TA,
Cite this work

Researchers should cite this work as follows:

  1. Animal welfare
  2. British Isles
  3. Commonwealth of Nations
  4. Developed countries
  5. Europe
  6. Head
  7. Livestock
  8. models
  9. OECD countries
  10. peer-reviewed
  11. penetration
  12. rendering
  13. stunning
  14. temperatures
  15. United Kingdom
  1. peer-reviewed