DISCUSSION ON ARTIIIDRY. 
91 
battery, commanded by Major Lawrie, which fired no less than 913 
rounds—that is over 150 per gun.” That is a very great number of 
rounds per gun. 
Major Young :—All the Battery Commanders told me they were not 
troubled with this recoil, and I constantly talked with them about 
it. 
The Chairman :—One would naturally think that there would be 
recoil with a light gun firing a 12J lb. shell, the whole weight of gun 
and carriage complete being only 880 lbs. 
Colonel Slade :—And the velocity very low. 
The Chairman :—Yes—“you would think naturally it would have a 
very great recoil, but then you find the velocity is only 920 feet 
seconds. 
Colonel Downing :—I do not think as a rule Sir, they ever took the 
the trouble to run up when they were not in line with the other guns; 
they kept recoiling backwards, and I think if you recollect we saw the 
same gun at Eynsford and it recoiled about three yards at each round. 
That was on the grass. 
The Chairman :—Is there anyone of the Ordnance Committee here 
who will be able to tell us what is the velocity that the Indian Govern¬ 
ment have asked for for their new mountain gun ? 
Colonel J. G. Stone :—1,420 feet seconds. 
The Chairman :—1,420 feet has been asked for by India for its new 
mountain gun ; and this, which is really a mountain gun, has 920. I 
daresay, Colonel Stone, you could tell me another thing : With a 
muzzle velocity of 920 feet at about what range would the bullets of 
a 12J lb. shrapnel be effective according to the formula that each 
bullet should have so many foot pounds. 
Colonel Stone :—I really cannot say off hand. Sir. 
The Chairman : —Roughly : You worked it out the other day, if 
you remember, that the 10-pounder with a velocity of 1,420 feet would 
have man-killing effect over 4,000 yards. 
Colonel Stone :—Yes Sir. 
The Chairman :—If you calculate this for a 12^ lb. shell with 
velocity reduced to 920 feet, the shrapnel bullet would only be effect¬ 
ive at short ranges, would it not. We will work it out and send it to 
the Secretary here, and have it put into the “ Proceedings ” ;* because 
* At the recent discussion at the R.A. Institution on “ The Artillery in Egypt,” a question was 
raised as to the limit of range at which the bullets of the shrapnel shell of the 12|-pr. (75 mm.) 
Maxim-Nordenfeldt Mountain gun would he effective. 
The following tables give some comparative data for this gun and the 2'5-inch R.M.L. andlO-pr. 
B.L. (experimental) guns. 
Gun. 
Muzzle 
velocity f.s. 
Remaining velocity of projectile. 
3000 yards range. 
4000 yards range. 
2’5-inch R.M.L... 
1440 
724 
617 
10-pr. B.L. 
1420 
883 
737 
12$-pr. Maxhn-Nordenfeldt. 
920 
650 
587 
