Posted by Sagebrusher on February 13, 2009 at 11:49:58 from (69.19.14.28):
In Reply to: OT-Balistics question posted by Bill Porter on February 12, 2009 at 20:13:07:
Bill, For this and other in-depth answers to your question I recommend you buy or borrow a copy of "HATCHER"S NOTEBOOK" by Julian S Hatcher, Maj Gen U.S.A.(ret.)(now deceased)) ISBNO-8117-0614-1 See Chapter XX "Bullets from the Sky" Gen Hatcher calculated through mathematical means verified by live fire that the 150 gr .30 cal M2 bullet fired at a 90 dgree angle with a mv of 2,700 fps would acheive a maximum height of around 9,000 feet. The bullets took approximately 18 seconds to reach max altitude and an average 31 seconds to return for roughly 50 seconds to return after firing. The return times and velocity were dependant on whether the bullets returned base down (the fastest return) or tumbled end over end (the slowest.) Gen Hatcher felt that during the last few thousand feet of fall that the bullet's return was at a constant 300 fps with an attnedant 30 foot pounds of energy. Bullets with higher ballistic coefficients travel higher/farther and thus take longer to return. Most of the casualties you hear and read about are produced by ignorant buffoons haphazardly firing weapons at less than perpendicular angles resulting in arcing trajectory curves where the bullet remains point on with, usually, more velocity than a bullet returning to earth in freefall mode.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.