We measured the projectile velocity on impact of three different remote drug delivery systems in an experimental setting using photo sensors.
Material and Methods:
The measured velocity was put in relation to the mass of the projectiles in order to determine the kinetic energy on impact according to the equation: E=m·v2/2, where v is the velocity in meters/second, m is the mass of the dart in kilograms and E represents the impact energy in Joule.
As every rifle deploys the pressure settings differently, we found, that the Dan-Inject JM Special 25 generates significantly lower impact energies on the target than the Pneudart X-Caliber gauged CO2 rifle using the same dart type and volume. The TeleDart RD706 even needs much lower pressure settings, a characteristic that implicates low flight velocities and thus low impact energies. Unfortunately we found the TeleDart rifle to strike very imprecisely at distances higher than 20 meters (GRAF, 2010 in preparation)
Due to their impact force projectiles used in animal anesthesia can seriously injure their target. Therefore site selection for optimal drug delivery, accurate range estimation and thorough knowledge of the equipment used are of essential importance in distance immobilization.