The report states that a leaf to the rear sight several inches long was prepared in order to obtain the necessary elevation. A combination of the V-notch slide of the regular issue sight and a screw at the bottom of the leaf afforded means of correcting for wind and drift.
The target, which had been 12 feet by 12 feet square at 1,500 yards, was changed to one 44 feet long by 22 feet high. The extended wings had a height of 16 feet.
Since one of the test's objectives was to gauge bullet penetration, the huge target consisted of three 1-inch thick boards, separated by 1-inch cleats. The target was supported on 6-inch spruce posts and was constructed partly of spruce and partly pine, since this was the wood at hand.
In the tests at 2,500 yards, the target was hit five times in seventy rounds with the .45-70-405 service load, only once with the Martini-Henry in eighty rounds, and four times with the long range Springfield in thirty shots.
The firing was done by Mr. R.T Hare of Springfield Armory who has the enviable distinction, so far as is known, of being the only person in the world who has hit the 'Bull's-Eye' six feet in diameter at 2,500 yards with three different rifles, and who has ever fired at and hit a target as that described in this report at 3,200 yards.
Also:
Auf 2500 yards hat er von 70 Schuss eingespannt fünfmal das 13,6m x 6,8m große Ziel (huge target) getroffen und offensichtlich einmal das 1,85m x 1,85m große Zentrum. Und er hat (wie oft steht nicht im Bericht) zumindest einmal das Ziel auf 3200 yards getroffen. Von 6 x 6 Fuss steht da aber nichts.
Grüße
Sandman
edit: Die Test auf 3500 und 3680 yards waren Test um die Flugzeit und den Winkel zu testen, um die Flugbahn berechnen zu können. dabei wurde auch der Einschlagwinkel in den Sand und die Tiefe der Penetration in den Sand gemessen, allerdings ohne dass auf ein Ziel geschossen wurde.
