<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>Re: hammer velocity</title></head><body> <blockquote type="cite" cite><font color="#008000">. . . Don't know about bullets and rifles. Too dangerous.</font></blockquote> <blockquote type="cite" cite><br></blockquote> <div>Peak chamber pressure (and hence acceleration) occurs with most calibres about five calibres down the barrel. In other words, if its a 6" Howitzer you've got pointed at someone, it will develop its peak chamber pressure at about 30" down the barrel. But it does depend a little on whether its an 'overbore' or 'underbore' cartridge, which is another way of saying, it depends somewhat on the volume of the cartridge, expressed as a ratio of the cross sectional area of the bore.</div> <div><br></div> <div>As a disclaimer, I might add that I only know about these things because I have been a keen centrefire rifle owner and hunter for many years, who has used them for the control of unwanted introduced animals to the Australian landscape. For the native fauna, I prefer to use a camera for shooting activities.</div> <div><br></div> <div>Best,</div> <div>Ron O.</div> <x-sigsep><pre>-- </pre></x-sigsep> <div>_______________________<br> <br> OVERS PIANOS - SYDNEY<br> Grand Piano Manufacturers</div> <div><br></div> <div>Web: http://overspianos.com.au</div> <div>mailto:info@overspianos.com.au</div> <div>_______________________</div> </body> </html>