7mm Remington Short-Action Ultra Magnum Ballistic Tables 

 7mm Remington Short Action Ultra Magnum - 160 gr Partition (Ballistic Coefficient: .475) 
Range
0
50yds
100yds
150yds
200yds
250yds
300yds
350yds
400yds
450yds
500yds
Velocity fps
2963mv
2858
2759
2628
2563
2467
2237
2284
2198
2113
2031
Energy ft/lbs
3117
2900
2702
2511
2331
2162
2000
1855
1716
1585
1464
flight Time 
of a sec
.052/sec
.105
.16
.218
.278
.341
.404
.471
.54
.613
25mph/36.6 fps
hrt/chest
2'
3.6'
5.8'
8'
10'
12.5' 
14.8'
17.3' 
Leads=
in-feet
Drift@10mph
90
0.2"
.6"
1.5"
2.7"
4.3"
6.3"
8.7"
11.8"
14.9"
18.7"
250yd zero
-1.6"
+1"
+2.6"
+3"
+2.1"
zero
–3.6"
–8.6"
–15.4"
–23.9"
-34.4"
Ballistics software will not give the identical figures Remington publishes. This is a 250 yard zero which makes the drop less than a 200 yard zero. The Nosler partition bullet should provide deep penetration on Elk and Moose at short to medium ranges.

Wind drift: A  45-degree wind drift angle isn't half the drift of a 90-angle, but is three-quarters the drift. It has a 70 to 75 percent effect, even though the angle is only halfway between no drift effect and full drift effect. The drift effect is not proportional, due to the aerodynamic ballistics of a bullet in flight. Just remember that halfway between full and zero effect is nearly three-quarters the drift of 90-degrees.  Memorize these aerodynamic ballistic realities.

Leading running big game shots are a lot more dangerous, background must be totally clear with a back-stop area for the bullet! Pay attention to your skill level, don't take running shots if you're not confident you can make killing shots! Also, only shoot at wounded running big game! Lead is in feet, use deer length leads at the longer ranges. Broadside 90 degree angle shots. Two hundreds yards is the running limit and 10 to 150 yards would be better! Bucks will average six and a half feet in length, does nearly 6 feet. The lead is figured from the chest, just behind the shoulders, subtract –2' feet from nose leads.

At 45 degree angles cut leads in half. This merely gives you the bullet flight time and lead at the above yardage's.

The .280 Remington caliber with 140 grain bullet is a good deer cartridge. My 243-06 wildcat beats it by a wide margin on velocity and energy, but with less bullet weight.

Rick Jamison writer for Petersen's Hunting Magazine, July 2002, p- 20, Guns & Loads Article Long Rangers,  - http://www.huntingmag.com  says in essence that for deer sized game you need a minimum of 1000 ft/lbs of energy and 2000 ft/sec velocity at the impact range for adequate bullet expansion. The bullet needs a sectional density between .215 to .265 and a high ballistic coefficient for long range shots.
This is a great Hunting Magazine, I subscribe through the local school magazine drives.

You can look at the various ballistic tables I have on the Net and determine the approximate outer range limit your cartridge and selected bullet will be capable of killing a deer with a well placed shot. If you can't put the bullet in the vital kill zone don't take the shot no matter how capable the cartridge you're using is at that range.

Related Pages:
 http://www.udarrell.com/leadingrunninggamerifle.html

 http://www.udarrell.com/ultimate_deer_cartridge.htm

 http://www.udarrell.com/wisconsin_coyote_hunting.html

A Page full of my links
 http://www.udarrell.com/my_pages2.htm

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          Darrell Udelhoven - udarrell

         Posted: 11/17/03; Updated: 03/05/11
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