300 Norma Magnum at 3848yards
BY Herschel Smith
3 years, 10 months ago
Here’s the next installment of “where did they get the money to build that gun anyway?”
This time it’s over 2 miles, with a 8 – 9 second wait time for the bullet, and from the comments, “28 MOA at 3850, that’s what..1070 inches, just shy of 90 feet windage??? wow…”
The commenter is rounding for MOA. I get closer to 94 feet for windage holdoff.
On February 7, 2021 at 11:35 pm, ambigousfrog said:
What’s the device in front of scope?
On February 7, 2021 at 11:57 pm, Georgiaboy61 said:
@ ambigousfrog:
It’s a prismatic device for adding elevation to the primary optic for being used. I can’t recall the original manufacturer/patent-holder of the device at the moment, but Nightforce Optics makes two variations upon the theme, one which adds 50 moa and the other which adds 100 moa. Versions which add mils (milliradians) are also available. NF calls their product a “wedge prism.”
In effect, it acts like a de facto periscope to allow the operator to attain elevation over-and-above that available to him via an angled scope mount/base, 20 or 30moa rings, plus whatever adjustment range is at-hand inside the scope proper.
If you’ve ever seen (in person or on film) a high-angle-of-fire weapon such as a mortar or howitzer, those crew-served weapons ultimately must rely on sights which are mounted to the side of the barrel, since the extreme elevation precludes sighting through an optical or other sight on top of the weapon. Writ large, this is the dilemma facing extreme long-range shooters. As ranges lengthen, the barrel (tube) must be elevated at an ever-greater angle relative to level ground.
In other words, at shorter ranges, a conventional shoulder-fired rifle is mostly a direct-fire, line-of-sight weapon, but as ranges lengthen and more elevation is needed, it becomes more of the military calls an indirect-fire or high-angle weapon.
On February 8, 2021 at 5:59 am, ambiguousfrog said:
@Georgiaboy61
Wow! That makes sense. I love the science behind shooting.
I learned something new.
Thanks