Abstract
1/2013
vol. 30
Original paper
EXTERNAL BARREL TEMPERATURE OF
A SMALL BORE OLYMPIC RIFLE AND
SHOOTING PRECISION
Biol. Sport 2013;30:47-50
Online publish date: 2014/07/22
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.
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.
Keywords
Olympic rifle shooting, barrel temperature, precision shooting, warming shots
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