title: External barrel temperature of a small bore olympic rifle and shooting precision.
abstract: Investigations on changes in a rifle's barrel temperature during shooting in a rhythm typical for practitioners of Olympic shooting sports are presented. Walther KK300 (cal. 5.6 mm), a typical rifle often used in Olympic competitions, R50 RWS ammunition and a high speed thermographic camera were used in the study. Altair version 5 software was used to process thermal images and a stationary wavelet transform was applied to denoise signals for all the studied points. It was found that the temperature of the rifle barrel does not exceed 0.3°C after one shot whereas the total temperature increase does not exceed 5°C after taking 40 shots and does not affect the position of the hitting point on a target. In fact, contrary to popular belief, the so-called "warming shots" are not done for barrel heating but for cleaning of remnants in the barrel.
authors.affiliation: Physics Department, University of Life Sciences, Lublin, Poland.
authors.forename: B
authors.initials: B
authors.lastname: Gladyszewska
authors.affiliation: Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Baranowski
authors.affiliation: Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland.
authors.forename: W
authors.initials: W
authors.lastname: Mazurek
authors.affiliation: Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland.
authors.forename: J
authors.initials: J
authors.lastname: Wozniak
authors.affiliation: Department of Applied Physics, Lublin University of Technology, Lublin, Poland.
authors.forename: G
authors.initials: G
authors.lastname: Gladyszewski
keywords: Olympic rifle shooting; barrel temperature; precision shooting; warming shots
references.citation: Int J Bioinform Res Appl. 2007;3(2):206-22
references.pmid: 18048189