TECHNICAL NOTE CRIMINALISTICS
Firing Distance Estimates with Pellet Dispersion from Shotgun with Various Chokes: An Experimental, Comparative Study
Article first published online: 6 APR 2011
© 2011 American Academy of Forensic Sciences
Journal of Forensic Sciences
Volume 56, Issue 4, pages 988–992, July 2011
How to Cite
Arslan, M. M., Kar, H., Üner, B. and Çetin, G. (2011), Firing Distance Estimates with Pellet Dispersion from Shotgun with Various Chokes: An Experimental, Comparative Study. Journal of Forensic Sciences, 56: 988–992. doi: 10.1111/j.1556-4029.2011.01761.x
- Issue published online: 5 JUL 2011
- Article first published online: 6 APR 2011
- Received 22 Jan. 2010; and in revised form 17 June 2010; accepted 10 July 2010.
- forensic science;
- cylinder bore;
- firing distance;
- pellet dispersion;
Abstract: There are several studies suggesting models for firing distance estimation due to pellet dispersion, but few of them consider the degree of choke of a shotgun. The purpose of this research is to suggest some models for estimation of the firing distance for choked and cylinder bore shotguns. Twelve gauge with full chokes, and 12 and 16 gauge with cylinder bore shotguns were fired with #2 and #5 shots from 75, 100, 300, 500, and 1000 cm distances. Statistically significant pellet dispersion values were found for each shotgun by using #2 and #5 shots for different firing distances. All the data obtained were analyzed with linear regression and four models were constituted. Investigators should use special formulae for each shotgun, degree of choke, and pellet type while determining the firing distance. Therefore, more experimental and comparative studies should be designed for each type.