59 
VERIFYING AT THE MEAN OF THE 
100 YARD BRACKET. 
BY 
CAPTAIN A. ff. POWELL, R.A. 
Tux object of this paper is to compare the process of finding the range 
by verifying at the mean of the 100 yd. bracket with the present 
system of verifying at the mean of the 50 yd. bracket, with the view 
of showing that by the former the required range is arrived at, 
(1) More reliably, 
(2) Sooner, 
(3) With less expenditure of ammunition. 
More reliably because the officer ranging is, during the process of 
ranging, only concerned with alterations of 50 yds., and the results of 
his observation are thereby simplified and rendered more consistent. 
More expeditiously because fewer changes of elevation and fewer 
ranging rounds are required. 
The examples will speak for themselves. 
For the sake of simplicity the target is supposed to be at once in- 
cluded in the “long bracket,” and the examples compare the process 
of finding the range by each method, supposing it to be at any inter- 
mediate division. 
It will be noticed that where the range is at 25 or 75 yds. the number 
of rounds expended and the number of changes of elevation is the 
same, but it is contended that if the true range is at 25 the chances 
of getting three —’s at 00 and three +’s at 50 are greater than 
getting two +’s and two —’s at 25, i.¢., to say the range is more re- 
liably obtained and with less chance of confusion to the officer ranging. 
The chances however are slightly in favour of the range being at 
some other sub-division, and in any of these a saving in ammunition 
and changes of elevation takes place in favour of the long bracket, 
