73 



Table S. 





Bore. 



Charge 

 of 



Powder. 



Projectile. 



Ele- 



Range. 



Mean 

 Velocity 



per 

 Second. 





Dia- - 

 meter. 



Area. 



Weight. 



Capa- 

 city. 



vation. 



Rifled 9-pounder) 

 service gun, cast > 

 iron, 17 cwt., ) 



Rifled 3 2- pounder) 

 service gun, cast > 

 iron, 5 cwt., j 



Similar gun, . 



Rifled 68-pounder} 

 service gun, cast > 

 iron, 95 cwt, ) 



Rifled 32 -pounder, i 

 cast iron, 95 cwt. j 



Rifled 18-pounder, \ 

 cast iron, 58 cwt. j 



Smooth bore, 68- \ 

 pounder service / 

 gun, cast iron, i 

 95 cwt., ) 



Armstrong breech- ) 

 loader field gun, 4 



Ditto, large gun, . 



Inches. 



4- 2 



6-41 



6-57 

 8-12 



637 



5- 29 

 8-12 



y ' 



6 



Inches. 

 13-1 



32-2 



31-9 

 51-7 



81-9 

 22 



51-7 

 .... 

 .... 

 .... 

 7 



28 '2 



lbs. ozs. 

 1 12 



6 0 



5 0 



6 8 



7 0 



6 8 

 16 0 



16 

 *9 0 



lbs. ozs. 

 14 0 



49 0 



41 0 

 90 0 



56 0 



34 0 

 68 0 



12 0 

 80 0 



lbs. ozs. 



6 0 



3 12 



solid, 



7 8 



2 0 



1 4 

 solid, 



3 

 4 



solid, 



Degrees. 



5 

 10 



3 



H 

 10 



10 



1 



2 



1 



5 

 14 



3 



5 

 10 

 10 



Yards. 



2000 

 3000 



1600 

 2100 

 3100 

 3600 

 3700 



3150 



3700 



3900 



340 

 640 

 1960 

 3480 

 1200 

 1820 

 3030 

 3900 



Feet. 



) not 

 J taken. 



1220 

 1016 

 930 

 900 

 740 



850 



955 



948 



2040 

 1280 

 ydy 

 714 

 923 

 900 

 826 



"Whitworth ) 

 breech-loader > 

 field gun, j 





.... 







solid, 



2 

 5 

 10 



1250 

 2300 

 780 



/ Initial ve- 

 \ locity 

 I about 

 j 1300 feet 

 f per sec- 



Ditto, large gun, ) 

 weight 80 cwt., ( 



5*2 



21 



12 0 



80 0 





5 

 7 

 10 



2600 

 3490 

 4400 



ditto 



Armstrong gun, | 

 100-pounder, j 





1 



»! 



12-0 

 12-0 



111-6 

 103-8 



solid, 

 C. shell, 







Initial Ve- 

 locity, 

 1124-7 

 1161-14 



Table ?. 













Initial 





Elevation 



Actual 



Paraboli 



Differ- 



Velocity in 





of Gun. 



Range. 



Range. 



ence. 



Feet per 

 Second. 







Yds. 





Yds. 





Armstrong \ 



7° 



2480 



2940 



460 



1080 



12-pounder | 



8° 



2797 



3349 



552 



1080 



gun, ) 



9° 



3000 



3755 



755 



1080 



Whitworth \ 



5° 



2342 



3057 



715 



1300 



12-pounder \ 



10° 



4120 



6020 



1900 



1300 



gun, ) 

 Whitworth \ 

 80-pounder \ 

 un, ) 













5° 

 10° 



2604 

 4730 



3057 

 6020 



453 

 1290 



1300 

 1300 



R. I. A. PROC. — VOL. IX. 



L 



