HDAV Posted February 22, 2010 Report Share Posted February 22, 2010 http://eprints.gla.ac.uk/726/1/Sports_Engi...ng5(1)33-42.pdf Interesting paper what i was hoping for were some 3-D images of shot clouds anyone seen one? Anyway thought some may be interested in the paper. (No I didn't write it.....) Quote Link to comment Share on other sites More sharing options...
garymc Posted February 22, 2010 Report Share Posted February 22, 2010 Thanks HDAV, have printed it out and seems like an interesting read. Cheers! Quote Link to comment Share on other sites More sharing options...
Floating Chamber Posted February 22, 2010 Report Share Posted February 22, 2010 Takes me back! Quote Link to comment Share on other sites More sharing options...
wymberley Posted February 23, 2010 Report Share Posted February 23, 2010 Takes me back! Hi, Could that possibly be because there's nothing new? They mention David Compton's thesis but there's no mention of the Ballistic Measurement System report to the then DoE that RA Giblin and he submitted. This report is possibly more meaningful to we shooters than anything else published in this country since 1932. Cheers Quote Link to comment Share on other sites More sharing options...
HDAV Posted February 23, 2010 Author Report Share Posted February 23, 2010 Hi, Could that possibly be because there's nothing new? They mention David Compton's thesis but there's no mention of the Ballistic Measurement System report to the then DoE that RA Giblin and he submitted. This report is possibly more meaningful to we shooters than anything else published in this country since 1932.Cheers I have no idea what that means......I was hoping some one would have a 3D model/slow video/animation of a shot cloud from barrel out as i can't visualise it myself so i hope to have a better idea of how to hit a target if i knew what i was trying to hit it with....... does the shot at the rear of the barrel accelerate through the middle or does it all have the same velocity I assume a shot cloud look something like an egg when i flight. Some thing like this but showing the shot cloud http://www.engr.colostate.edu/~dga/high_sp...nt/shot_gun.wmv Quote Link to comment Share on other sites More sharing options...
wymberley Posted February 23, 2010 Report Share Posted February 23, 2010 I have no idea what that means......I was hoping some one would have a 3D model/slow video/animation of a shot cloud from barrel out as i can't visualise it myself so i hope to have a better idea of how to hit a target if i knew what i was trying to hit it with....... does the shot at the rear of the barrel accelerate through the middle or does it all have the same velocity I assume a shot cloud look something like an egg when i flight. Some thing like this but showing the shot cloud http://www.engr.colostate.edu/~dga/high_sp...nt/shot_gun.wmv Hi, Yeah, sorry about that. I'm not sure, but I think FC might just know a thing or two about cartridges and would welcome his opinion. I am not aware of any existence of the model you describe. I'm not being facetious here, but a good coach will give you a better idea of how to hit a target than a piece of film. Having said that we did have a discussion on here not long ago and I think it was Clayman who described the shot string (cloud). Cheers Quote Link to comment Share on other sites More sharing options...
Floating Chamber Posted February 24, 2010 Report Share Posted February 24, 2010 'The Gun and its Development' by W.W. Greener, Chapter XIV, page 351. 'THE SHOOTING CAPABILITIES OF SHOTGUNS'. There were some bright chaps about in the 19th cent. A very intersting read. Simplified below in easyspeak. A cartridge was fired through a very thin sheet of paper and behind this was a VERY FAST MOVING 'graduated' roll of paper. Result? A 'printed' two dimensional circular pattern and a 'long printout' of the shot-string, showing the stringing of the various circles of shot during its flight. Quote Link to comment Share on other sites More sharing options...
John_R Posted February 24, 2010 Report Share Posted February 24, 2010 Some years ago I saw a video that actually tracked a shot string for a few seconds. Quote Link to comment Share on other sites More sharing options...
burntout Posted February 24, 2010 Report Share Posted February 24, 2010 youtube is your friend. try "time warp shotgun" or "high speed bullet impact" - there is a 10 minute video which includes some shot - @ 1x10^6 frames per second. Quote Link to comment Share on other sites More sharing options...
HDAV Posted February 24, 2010 Author Report Share Posted February 24, 2010 (edited) is the best i found i understand the issues trying to film the action which is why i thought there may be a computer model. Coaches cost more money than youtube! and for good reason i recently clipped a few clays and wondered why shotgun shooting seems to be more art than science. is just plain amazing Edited February 24, 2010 by HDAV Quote Link to comment Share on other sites More sharing options...
John_R Posted February 25, 2010 Report Share Posted February 25, 2010 The video I saw really did track the shot string, the camera having been mounted on a moving base with some sort of computer control. I cannot show it here, it was not on the internet, and the hardware & software behind it all was under development for some defence industry application. The end product's purpose was not to follow shotgun pellets, this was part of a larger demo showing just what this system was capable of. I saw it because I was working on a conference where this was shown to the audience. Quote Link to comment Share on other sites More sharing options...
BlaserF3 Posted February 25, 2010 Report Share Posted February 25, 2010 Have you seen this one? http://www.liveleak.com/view?i=48b_1221123065 It has a hell of a spread. Quote Link to comment Share on other sites More sharing options...
John_R Posted February 25, 2010 Report Share Posted February 25, 2010 Very good, the way the camera tracks is just like what I saw. Very impressive. Quote Link to comment Share on other sites More sharing options...
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