Note: In comments concerning 1st & 2nd hole, we actually mean the very center of the hole for lining up your shot. Each click = .5" at 100 yards. By using the 1st hole, I save myself about 30 clicks with both weapons. The 2nd hole saves me about 70 clicks with the .45-70 and 81 clicks with the .30-40 Krag.
This offers a much more efficient sight system!
Twin Aperture front sight: Shooter's View
May 6, 2014
To accommodate further research of the DWBS, I recently extended my private range to just over 1,000 yards. Using the DW Battlesight receiver sight with our .500" x .375" rifle sight, I found that adding a second hole underneath the first one allows for an even greater shooting range. Allow me to explain....
Traditionally, a shooter will use the top of the front post to line up his shot. We call that the "top of the flat". Adding a hole that you can see through allowed for greater range because you could line up your shot using the top of the flat, or by using the hole underneath it for longer distances. We know through careful research that the first hole gives the shooter a 15" advantage at 100 yards, giving the shooter an additional 100-200 yards. (I tested this using a .45-70, 405 grain bullet at 1500 fps, and a .30-40 Krag, 208 grain bullet at 2050 fps.) However, the addition of a SECOND hole, underneath the original one, allows the .45-70 to shoot 35" high and the .30-40 Krag to shoot 40.75" high, adding another 100-200 yards. THIS PUTS YOUR RANGE FROM 0 YARDS TO OVER 1,200 YARDS WITH ONE RIFLE (.30-40 Krag), IRON SIGHTS, AND NO SCOPE! This ONE sight system gives the shooter three sights in one!
The DWBS receiver sight gives the shooter from about .45" to .6" depending on the length of the barrel. (Longer barrel being .6", shorter being .45"). The average is .5" at 100 yards depending on the bullet coefficient and the velocity. Remember that the second hole is more than twice the number of inches (35" to 41"). It is at the far end of the curve in the trajectory, therefore the .45-70 can achieve an additional range by allowing the shooter to engage targets out to 650 to 700 yards, and the .30-40 Krag out to 1,000 to 1,200 yards. This is all done with repeating results from zero, ranges thought almost impossible before. For those shooting more modern calibers, the .30-06 or later, the effective range also increases. This past deer season, I shot a doe just above the heart at 307 yards with a 220 gr. 30 cal. at 2,000 fps. It was more satisfying than the 17 point buck killed at 95 yards some 7 years ago. And it tasted better, too.
The twin aperture front sight will ONLY be available in one size (.500" x .375") and will be ready for shipping in about two weeks.
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