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Firearms >> U.S. Military Krags >> Probably Useless Information - Rear Sight Heights
http://www.kragcollectorsassociation.org/cgi-bin/yabb2/YaBB.pl?num=1471884563 Message started by butlersrangers on Aug 22nd, 2016 at 4:49pm |
Title: Probably Useless Information - Rear Sight Heights Post by butlersrangers on Aug 22nd, 2016 at 4:49pm
It is difficult for me to entirely understand the relationship between the various U. S. Krag rear sight models and the front-sight blade heights usually 'matched' with them.
When a Krag Rifle or Carbine was accepted into service or left Springfield Armory, there must have been a well thought out and tested rationale. Also, most Krag sights were designed around a loading with a 220 grain, flat-based RN projectile, moving at 2,000 fps muzzle velocity. (Exceptions would be, the 1898 ammo with a 220 grain bullet moving at 2,200 fps and Frankford Arsenal 1907 'Palma Match' ammo with a 203 grain 'pointed' projectile). I do not know if different height blades were ever used with these 'exceptional loadings'. Of course, there is never a complete guarantee that a Krag's sight parts have not been switched at some point of time (and by whom). Out of curiosity, I measured the height of the bottom of the "V" Notch, above the top of the barrel radius, of various Krag rear-sights, that I have available. The rear-sight blades were at their lowest setting. It was difficult to get consistent measurements. (Note - The U. S. Ordnance Dept., likely, would have based such measurements from the 'axis of the bore'). FWIW: 1892 Rifle rear-sight "V" - .477" above barrel radius (FS blade .275") 1896 Rifle rear-sight "V" - .468" above barrel radius (FS blade .286") 1898 Rifle rear-sight "V" - .440" above barrel radius (FS blade .413") 1901 Rifle rear-sight "V" - .493" above barrel radius (FS blade .413")(not in picture) 1902 Rifle rear-sight "V" - .425" above barrel radius (FS blade .413") |
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