rembrandt
Just curious. You said, on a closed thread regarding maximum ranges for the .50 BMG, that a 7MM Mag. had a maximum range of +or- 7 miles. How is that calculated? Is the assumption that the muzzle is parallel with the earth and that only gravity and wind resistance are factors? Or is the assumption that the muzzle is at a high angle and the distance calculated includes the trajectory of the rising and falling projectile?Thanks in advance. That's one hell of a distance.
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As a Hunter Education Instructor, I found this information in the student and Instructor training manuals. There were charts showing the "effective range" and "maximum range" for shotguns and rifle rounds. The manuals should be uniform across the country for any States Hunter Education program. Where they got the information, I don't know. I'll do some more checking tonight after work. 0 -
Ndbilly,Just got my Hunter Ed book out to check those charts. They were reprinted from NSSF/SAAMI http://www.saami.org/ http://www.nssf.org/ Looks like I spoke in error about the 7mm, the maximum range it can shoot at sea level is 3.5 miles....but at 12,000 feet it is capable of 5.25 miles.A .22 high velocity long rifle will travel 1.5 miles at sea level and 2 miles at 12,000'.A shotgun with #5 shot can travel about 300 yds at sea level, 500 yards at 12,000 feet. The heavier the shot, the further it travels....No.00 will go 700 yards at sea level and almost 1000 yards at 12,000 feet. A 1oz. slug will travel 3900' at sea level and 5600 feet at 12,000'.Shotguns are listed as having what is called the "effective range" which is the sweet spot for a shot pattern, and what is called "Terminal range"....this is the distance that it can still kill before dropping to the ground. ie: Modified Choke has an "effective range" of 35 yards and a "terminal range" of 200+ yards.My guess is that the rifle distances were determined holding the rifle at a optimum elevation...what they used for loads is probably listed in their findings. Hope this helps.......Rembrandt 0 -
Thank you, sir, you painted a picture even I could understand! 0
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