From: Robert Coyote (coyyote@hotmail.com)
Date: Mon Oct 01 2001 - 15:13:30 MDT
.338 Lapua 250gr FMJ-BT (LockBase) at 3000fps
Bullet Drop (Inches)
100y
91m
200y
183m
300y
275m
400y
366m
500y
458m
600y
549m
700y
641m
800y
732m
900y
824m
1000y
915m
+11.1
+19.4
+23.0
+21.3
+13.9
Zero
-21.1
-50.3
-88.6
-137.0
Energy & Velocity (Muzzle : 4996 Ft.-Lbs., 3000fps)
100y
91m
200y
183m
300y
275m
400y
366m
500y
458m
600y
549m
700y
641m
800y
732m
900y
824m
1000y
915m
Energy 4525
4091
3692
3325
2986
2676
2392
2133
1896
1682
Velocity 2855
2715
2579
2448
2320
2196
2076
1960
1848
1741
Wind Drift (Inches) 10mph Crosswind
100y
91m
200y
183m
300y
275m
400y
366m
500y
458m
600y
549m
700y
641m
800y
732m
900y
824m
1000y
915m
0.4
1.8
4.2
7.6
12.1
17.9
25.0
33.6
43.8
55.6
----- Original Message -----
From: "James Rogers" <jamesr@best.com>
To: <extropians@extropy.org>
Sent: Monday, October 01, 2001 1:03 PM
Subject: OFFTOPIC: Re: first line of defense
> On 10/1/01 12:44 PM, "Mike Lorrey" <mlorrey@datamann.com> wrote:
> >
> > You want to look at ammunition which has relatively flat trajectory at
> > distance. 30-06 is okay, but on the small end. .300 Winchester Magnum,
> > .270 Remington, and upward to .416 Rigby, .375 H&H, .458 and .45-70 or
> > .45-100 have a flatter trajectory at greater range than the 30-06.
>
> Huh?!?! Most of the cartridges you mention most definitely do *not* have
a
> flatter trajectory than a .30-06. Hell, half of them can't do much more
> than 2,000 feet per second whereas the .30-06 can do a little under 3,000
> fps on average. And never mind that the .4xx and .375 H&H have hideously
> low ballistic coefficients, where the BC defines the flatness of a
> trajectory for a given initial velocity (higher BC = flatter trajectory).
>
> The .300WM has the same BC as the .30-06, but a little faster so flatter.
> The .270 (Winchester, not Remington) has a nearly identical trajectory as
> the .30-06 for a given BC, but in a slightly smaller platform.
>
> In fact, out of that entire list, only the .300WM is generally a flatter
> shooting cartridge than the .30-06 at a distance.
>
> I have to say, I am puzzled that you made these mistakes as I would have
> expected you to know these in your sleep.
>
>
> -James Rogers
> jamesr@best.com
>
>
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