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#1
29-08-16, 03:25
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On a more serious note, the question of 25pdr AP versus 17 pdr ballistic performance is an interesting one. The crucial part as I understand it is that kinetic energy i.e. hitting power = Mass x Velocity squared. This means that if you double the mass you have doubled the energy but if you double the velocity, energy is vastly more than doubled.
This is the reason that small arms projectiles have reduced in size and weight over the years as propellants improved and muzzle velocities increased. David
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Hell no! I'm not that old! Last edited by motto; 29-08-16 at 03:37. 
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#2
04-09-16, 19:14
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Very nice work Rob.
After blasting off some gunpowder at the castle yesterday we started talking about ordnance on site. One of the managers said she had gone through some old files this past week and found a letter about a gun. When I read it I immediately thought about this thread. Apparantly Dover Castle had a pheasant sitting here for a number of years. No one currently knows its fate so will have to put on my Sherlock hat. The curators only work weekdays so I will be contacting them next week to see if they have the data plates. Enclosed is a copy of the letter, names redacted to protect the innocent.
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