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TABLE II.—Penetration
ОглавлениеThe penetration of the Martini-Henry and the Lee-Metford or Lee-Enfield rifle with Mark II. bullet is as follows:
Martini-Henry | 15½ in. of 1 in. deal boards 1 in. apart | 19 in. of sand containing 15 per cent. of moisture |
Lee-Metford {Mark II. } | 42 in. of 1 in. deal boards 1 in. apart | 60 in. of sand containing 15 per cent. of moisture |
Lee-Enfield {bullet } |
The penetration of bullets of .314 calibre differs little from that possessed by the Lee-Metford or Lee-Enfield, of which the muzzle velocities are very little lower, with Mark II. bullet. The Belgian Mauser perforates 55 inches of fir-wood at 12 metres distance. With regard to the penetration of bullets of smaller calibre that of the Roumanian Mannlicher (.256) may be taken as typical. When fired into a sand butt at 25 yards the bullet enters 9 inches and then breaks up.
The comparative size of the different cartridges is shown in fig. 14.
The general remarks already made as to the effect of weight, calibre, and velocity sufficiently explain the importance of the particulars given in this table, but it will be noted that the Lee-Metford rifle is inferior to both the Krag-Jörgensen and Mauser rifles in the initial velocity transmitted to its bullet. The tendency to equalisation, in this particular, when the remaining velocity is considered, has been mentioned; but it may be of interest if I quote from Nimier and Laval[7] the scale on which the decrease in velocity takes place in the case of the three weapons.