Hi to all thought I would post pics of the nordenfelt 1 inch anti torpedo boat gun alongside the two main mks of 1 inch aiming projectiles to make it easy to see the differences,the nordenfelt is a thin brass covered steel bullet the brass designed to grip the rifling of the multi-barrell gun,the bottom 1 inch aiming gun projectile is solid lead and was originally used with the first black powder version of the aiming cartridges when we started to use cordite it was thought that the greater heat and pressure would damage the base of the solid lead bullet so they changed the projectiles design by incorporating a copper base which comes up the side by about a quarter of an inch also the overall shape was made more aerodynamic this design did not last very long as they soon realised the extra manufacturing and expense of the copper base was unnecessary and reverted back to the solid lead bullet for later mks the aiming gun cartridges are the same as the nordenfelt in size and over all shape but with a different head stamp and minus the 3 stab indents which secure the bullet in place
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