474 
THE 80-TON GUN. 
150 tons; and it is certain that unless we are content to be beaten, 
we must build something bigger than anything we now have. 
PQ 
pel 
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Total. 
At the 1 At 
muzzle. 1000yds. 
ft. tons. 
19,890 
20,200 
20,630 
21,070 
21.835 
22,030 
21,515 
22,125 
22,320 
21,420 
22,580 
22,900 
22,350 
22,740 
23,300 
23,200 
22.835 
22,220 
22,450 
22,775 
23,000 
ft. tons. 
22,613 
23,007 
23,503 
24,006 
24,890 
25,095 
24,548 
25,233 
25,475 
24,377 
25,823 
26,350 
25,580 
26,030 
26,740 
26,630 
26,314 
25,406 
25,683 
26,103 
26,385 
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Mean 
pressure 
on 
powder 
chamber. 
g-9 
Maximum 
pressure. 
CM r—t 
4 1 1 
gs-s-s-s'-s^s-s-s-s-s-s-s-s's-s's-s-s-s's-s 
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5' 
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Description of 
powder. 
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Fired by axial vent, but ignited at service distance from end of bore. 
