.308 vs 30-06

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I'm with you on the lethality and practicality of killing critters - but...
the longer the bullet flies fast, the less effect the wind and gravity have on it.

A bullet travelling at 4000 fps is going to pass a hundred yards in .075 of a second. A bullet going 3000 fps passes it in .1 seconds. (I know that's not the numbers we're dealing with, just making it simple)

Wind has .025 of a second longer to push the bullet aside, gravity has .025 of a second longer to pull it down.
That for each 100 yds, assuming the bullet could sustain those speeds. They don't, they slow down, and the differences between the two get larger, and the effects of wind and gravity become more exaggerated.

As I've said many times before - my old 7x57 has never been outrun by a deer. On the other hand, a 7mm Remington Magnum will seriously outshoot it at distance, and the superior ballistic trajectory will limit the amount of math/holdover the shooter must do.

I used to care about such things, now I'm more interested in how far a given rifle will shoot "minute of deer".
If I owned a cartridge company I'd surely be trying to promote the latest and greatest in order to boost sales.
The velocity of a bullet has zero effects on the force of gravity. Absolutely none.
If one could get a perfectly flat piece of land, line up a rifle 4' high to be perfectly horizontal to the earth and fire a shot at the exact moment a bullet was dropped at the same height the rifle is above the ground as the bullet left the barrel, both bullets would hit the ground at the same time.
The higher velocity bullet would hit further out, but it would hit at the same time as the slower bullet that fell much closer.
 
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The velocity of a bullet has zero effects on the force of gravity. Absolutely none.
If one could get a perfectly flat piece of land, line up a rifle 4' high to be perfectly horizontal to the earth and fire a shot at the exact moment a bullet was dropped at the same height the rifle is above the ground as the bullet left the barrel, both bullets would hit the ground at the same time.
The higher velocity bullet would hit further out, but it would hit at the same time as the slower bullet that fell much closer.
Now line up 2 identical rifles with identical bullet, 4' off the ground, and with targets 100 yards down range. 1 rifle is loaded to shoot that bullet at 3200 fps. The other rifle is loaded to shoot the bullet at 2800 fps.

Which one is going to have the bullet lower on the target at 100 yards? Gravity is the same for both identical bullets as you say.....but the 3200 fps bullet has less time for gravity to effect it.
 
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Now line up 2 identical rifles with identical bullet, 4' off the ground, and with targets 100 yards down range. 1 rifle is loaded to shoot that bullet at 3200 fps. The other rifle is loaded to shoot the bullet at 2800 fps.

Which one is going to have the bullet lower on the target at 100 yards? Gravity is the same for both identical bullets as you say.....but the 3200 fps bullet has less time for gravity to effect it.
Exactly, which is why I added the time factor in my explanation.

Some folks don't consider that...wind also has more time to push that bullet sideways.
 

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So with all that above said. Here is "Old Faithful". Refer back to post 7. This 700 '06 I've had since 1980. That's real western wear protecting the furniture, "Gun Chaps". How many of you, have on your dope charts, LEAD for time of flight calculations of an estimated target travel speed? I do on the bottom row. These are posted in rounded numbers for simplicity since all factors are guesstimated at the moment. This chart spins on scope tube. Range in Yds/Drop in inches/drift in inches/Lead in feet. Note that I leave this deer gun set up for "coyote dead hold target acquisition"(only 1.5" above line of sight). Ethically, you can see the real difficulty in striking a moving target. This calculation should only come in to play on follow up shots on game animals, except for coyotes!!!
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The 30-06 was Carlos Hathcock's primary choice, though he did use a .308 also. Just sayin' again.
 
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Now line up 2 identical rifles with identical bullet, 4' off the ground, and with targets 100 yards down range. 1 rifle is loaded to shoot that bullet at 3200 fps. The other rifle is loaded to shoot the bullet at 2800 fps.

Which one is going to have the bullet lower on the target at 100 yards? Gravity is the same for both identical bullets as you say.....but the 3200 fps bullet has less time for gravity to effect it.
It matters not the velocity. Gravity has the same effect on anything no matter the velocity. I don't get the argument, it's still physics.
 
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So with all that above said. Here is "Old Faithful". Refer back to post 7. This 700 '06 I've had since 1980. That's real western wear protecting the furniture, "Gun Chaps". How many of you, have on your dope charts, LEAD for time of flight calculations of an estimated target travel speed? I do on the bottom row. These are posted in rounded numbers for simplicity since all factors are guesstimated at the moment. This chart spins on scope tube. Range in Yds/Drop in inches/drift in inches/Lead in feet. Note that I leave this deer gun set up for "coyote dead hold target acquisition"(only 1.5" above line of sight). Ethically, you can see the real difficulty in striking a moving target. This calculation should only come in to play on follow up shots on game animals, except for coyotes!!!
View attachment 548746View attachment 548747

View attachment 548748
The 30-06 was Carlos Hathcock's primary choice, though he did use a .308 also. Just sayin' again.
My dope has been taped on my rifle stock since the 80's. It's worked for many years taking 10 elk at long range in 12 years.
 


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