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Joined: Apr 2006
Posts: 14,999
Campfire Outfitter
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Campfire Outfitter
Joined: Apr 2006
Posts: 14,999 |
The Mayans had it right. If you�re going to predict the future, it�s best to aim far beyond your life expectancy, lest you wind up red-faced in a bunker overstocked with Spam and ammo.
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Joined: Jan 2007
Posts: 3,371
Campfire Tracker
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Campfire Tracker
Joined: Jan 2007
Posts: 3,371 |
Coriolis effect; yes to generalize. Hunt better, get closer and none of it will apply nor matter. Exactly! That's why I'm going to spears and throwing knives. That's what real hunting is all about.
Steve
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Joined: Jan 2007
Posts: 3,371
Campfire Tracker
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Campfire Tracker
Joined: Jan 2007
Posts: 3,371 |
Looks like the portable version of hte Guns of Navarone.
Steve
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Joined: May 2004
Posts: 56,174 Likes: 16
Campfire Kahuna
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Campfire Kahuna
Joined: May 2004
Posts: 56,174 Likes: 16 |
Did I ever show you guys a picture of my dangerous game gaff?
I am..........disturbed.
Concerning the difference between man and the jackass: some observers hold that there isn't any. But this wrongs the jackass. -Twain
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Joined: May 2003
Posts: 20,494
Campfire Ranger
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Campfire Ranger
Joined: May 2003
Posts: 20,494 |
The French had an expression. "On zee beeg gun, zee liddle knife poot!" (I doubt they were talking about those monsters.) 
"Keep thy heart with all diligence; for out of it are the issues of life." (Prov 4:23)
Brother Keith
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Joined: Aug 2002
Posts: 7,445
Campfire Tracker
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Campfire Tracker
Joined: Aug 2002
Posts: 7,445 |
Military snipers have a formula for figuring in spin drift.
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Joined: Dec 2003
Posts: 5,950
Campfire Tracker
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Campfire Tracker
Joined: Dec 2003
Posts: 5,950 |
OTOH, now and then you will see a punted football that does not nose over to follow its trajectory and the reason is high Sg. Don't recall seeing a passed ball ever do that, but maybe so. Dan, When I throw a tight spiral I always noticed that the ball did not nose over, but retained its attitude throughout its flight. When I started watching pro ball on TV, with the help of all of todays video technology and skills, I noticed that balls thrown by the pros DO nose over. Guess I always figured they put something on the ball that I knew nothing about to make it do that. Maybe I just spin the ball too much.
Our God reigns.
Harrumph!!!
I often use quick reply. My posts are not directed toward any specific person unless I mention them by name.
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Joined: Dec 2006
Posts: 131
Campfire Member
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Campfire Member
Joined: Dec 2006
Posts: 131 |
Interesting thread. Unless someone's beaten me to it, I'll coin the term 'spindage'.
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Joined: Jan 2007
Posts: 3,371
Campfire Tracker
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Campfire Tracker
Joined: Jan 2007
Posts: 3,371 |
Did I ever show you guys a picture of my dangerous game gaff? Don't recall that one.
Steve
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Joined: Mar 2002
Posts: 11,513 Likes: 1
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2002
Posts: 11,513 Likes: 1 |
Around here we have a league that shoots a lot at 600 yards, 1000 yards, and Palma (800, 900, and 1000 yards) using such boat tailed spitzers as 80 grain .224s, 115 grain 6mms, 142 grain 6.5mms, and 155 or 190 grain .308s. Velocities are typically 2800-3000 fps.
As near as we can tell, spin drift is non-existent.
The Coriolis force from the earth spinning can be calculated. It's about 1" when shooting south to north at 1000 yards.
Don't blame me. I voted for Trump.
Democrats would burn this country to the ground, if they could rule over the ashes.
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Joined: Jan 2007
Posts: 3,371
Campfire Tracker
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Campfire Tracker
Joined: Jan 2007
Posts: 3,371 |
Around here we have a league that shoots a lot at 600 yards, 1000 yards, and Palma (800, 900, and 1000 yards) using such boat tailed spitzers as 80 grain .224s, 115 grain 6mms, 142 grain 6.5mms, and 155 or 190 grain .308s. Velocities are typically 2800-3000 fps.
As near as we can tell, spin drift is non-existent.
The Coriolis force from the earth spinning can be calculated. It's about 1" when shooting south to north at 1000 yards.
2 questions: Are the shooters matching the twist of barrels with the bullet they intend to shoot 1000 yds? I'd suspect they are. Maybe I don't completely understand it, but doesn't the Coriolis effect vary with location, i.e. how far from the equator and time of flight as well as distance shooting?
Steve
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Joined: May 2004
Posts: 56,174 Likes: 16
Campfire Kahuna
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Campfire Kahuna
Joined: May 2004
Posts: 56,174 Likes: 16 |
Coriolis Effect is a function of latitude and direction of the shot. Spin Drift is very real, but it's hard to see the effect if your rifle is zeroed at a given distance. 
I am..........disturbed.
Concerning the difference between man and the jackass: some observers hold that there isn't any. But this wrongs the jackass. -Twain
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