477 
PREFATORY NOTE. 
The following paper was originally drawn up for private use. It does not claim 
to contain much original matter, but is a precis of the Committee’s report, and is, 
in a great measure, a verbatim copy of their recommendations, See. As the report 
itself is somewhat bulky, and may not be within the reach of all, it is hoped that 
these notes may be found useful for the general reader. 
NOTES 
FROM 
“REPORT ON EXPERIMENTS WITH ARMOUR-PIERCING 
PROJECTILES UP TO 9-IN. CALIBRE,” 
Dated 22nd June, 1880. 
BY 
CAPT. J. P. CUNDILL. 
Preliminary Experiments. 
The experiments were divided into two series— 
1st Series. To test material for armour-piercing projectiles. 
2nd Series. To determine the best form and material for armour- 
piercing projectiles. 
1st Series. 
The object of the first series was to test the material of projectile 
only, and it was decided to use the 9-in. R.M.L, gun, with such a 
powder-charge as would give to a projectile weighing 268 lbs. a 
striking velocity of about 1500 ft. per second. 
This, by the usual formula, 
7 / Wv 3 \P6 
b ~\2gKx 2irr X, 2240 J 4 
would give power to penetrate an unbacked wrought-iron plate 12*71 ins« 
thick. 
59 
