Federal's 7mm Remington Magnum 150 grain Sierra GameKing BTSP Cartridge - Ballistics - Wind Drift - Lead
I would use Nosler Boattail Silver Tip (BST) 140 grain bullets on Deer 

Range yds
0
50
100
150
200
250
300
350
400
Velocity fps
3110
3010
2920
2830
2700
2650
2560
2480
2400
Energy ft/lbs
3220
3025
2840
2665
2500
2340
2190
2050
1915
flight time/sec
fractions
.049
.099
.152
.206
 .260
.3175
.376
.435
15mph/22fps
"lead from"
1'
2.2'
In-feet
x
x
x
x
In feet
25mph/36.6fps
hrt/lungs
+1.8'
3.6'
x
x
x
Leads=
 In-feet  
30mph/44fps
90ºangle
2.2'
4.4'
x
x
x
In-feet
   
wind-drift @10mph
90ºangle
 0.1"
0.5"
1.2"
2.2"
3.6"
5.2"
7.2"
9.5"
250yd zero
-1.5"
0.8"
2.2"
2.6"
1.8"
zero
-3.1"
-7.5"
-13.3"
Leads are in feet.  Shooting at running game is much more dangerous. Be sure no other hunters are in the area and that there is a good backstop, and never shoot over a horizon under any circumstances! A 100 yards is the usual limit for most hunters. These larger caliber bullets are even more dangerous to use on running game! The shot must be safe, there are very few good opportunities for running shots!

Speaking of safe gun handling, this should be taught to everyone that handles a shotgun or rifle.
Whenever you raise the bolt handle straight-up move the safety to the safe position before you chamber the live round!
On a pump action shotgun or rifle, when the action is slide all the way back immediately set the safety!
A gun should never be loaded magazine or chamber unless you are in the immediate area of the game you are going to shoot.

For many reasons, you are much more apt to have an accidental resulting in shooting a person that is very near you in the field! Think about these scenarios! Deer drives can be very dangerous scenarios if not done following safety procedures!

Wind drift: A  45-degree wind drift angle isn't half the wind-drift of a 90º-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.

This is a 150 grain bullet chart, the 7 mm ultra mag table uses a 140 grain bullet! In the 7 mm & 7 mm Remington Magnums the author of the, "Ultimate Deer Cartridge," recommends using the "120 grain Nosler Ballistic Tip bullets for deer." He says to stay away from the 120 grain Sierra PSP, it won't expand rapidly enough . I would use the 139 grain Hornady Interlock as it will break bones and still penetrate. Additionally, Hornady's new 139 grain 'Interlock' Super Shock Tip (SST) bullets might be just the ticket on deer. If you use Nosler BT 120 grain bullets for coyotes - point of impact would probably be around 1.7" high at 100 yards for a 250 yard zero.

Remember you are figuring your lead from the heart/lung area! It is better to over lead than to under lead, miss clean or drop them in their tracks.

Swing through the middle of the body, squeeze off your shot when the lead looks right and be sure to keep swinging, --follow through.

Keep this lead information in your head and practice visualization leads in your own mind and with your rifle, squeezing the trigger and following through! It works for me and it will for you, too! Visualizing in your mind the various combination of shots and angles conditions your brain's reflex habits and will make a huge difference in your shooting abilities. I no longer claim to be a marksman as I have a lot of handicaps these days.

The 7mm Remington Magnum is quite a cartridge and I can see why so many are influenced to buy and use it! But for me, the 6mm's are just right for deer. I'm testing Hornady's new 95 grain 'Interlock' Super Shock Tip (SST) bullets in my .243 and 243/06 Wildcat on deer this upcoming extended deer season.

I've probably made a lot of enemies posting the realities concerning leading running game, as I've heard every imaginable story of how, "the critter was running at top speed 300 yards away broadside and I held on his nose and blew his brains out." "Oh yes, this ultra mag bullet gets there at the speed of light." Well, if you  were shooting the a 7mm Ultra Mag with a 140 grain Nosler Partition bullet @ 3425MV and the deer was running broadside at 30mph/44fps at 300-yards (no cross winds) bullet flight time is .296-sec X's 44-fps, you would have to lead his brain by 13' feet! That's pure unchangeable ballistics math that can't be modified much by a mere miscalculation of what happened. At any rate what I put on the chart is very close to the required lead, barring a lot of other factors I won't list here; you can probably think of a number of them.

SAFETY WARNING: At any time when Hunters are too close together they are in a high level unsafe hazard zone! If a deer is sighted one hunter may move into the line of fire of the other hunter. This is an imminent danger when a deer is down and then regains its feet and is escaping, either hunter when in the process of shooting at a deer usually won't see the other hunter, --if he is real close,  --move into his line of fire. I know this from experience because many decades ago when I and my hunting buddy had downed a deer and we were nearly upon it, it appeared done for but regained its feet and began to run, I stepped forward and to the right to shoot it and within inches of having my head blown off when he shot the deer  putting it down for good.  I went down from the muzzle blast as we were very close. He was behind me and I assumed I would be the only one shooting! Never assume anything, or you or your hunting companion may end up dead! Take this warning to heart and always be aware of the imminent dangers of being close to another hunter or hunters!  Whenever you are close together each must know what the other is going to do, set some hard and fast rules and be fully aware of the other or others before firing any shot!

Darrell Udelhoven
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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: 11/28//00; Updated: 12/28/05
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