sighting in. how high at 100 yards?

[6x6in6]

I sight in 3" high at 100yds, 2.5" high @ 200yds, 4" low @ 300yds. With an average  rifle sighted in for 3" high @ 100yds, you can basically hold dead center chest out to 300 yds without doing any thinking. That's as far as the average guy can shoot accurately anyhow. Any farther than that and you'll need a rock solid rest, a still animal and a couple minutes to get the trajectory sheet out of your pack after ranging it.
This is based on my 30-06 w/165gr Scirroco @ 2850fps. This should be very similar to a 7mag w/175gr bullet.
I aim at the heart unless their way out there. Shootin sticks, a good squeeze and get your tag out.

It is very similar with 175's.
At 3 1/2" high it puts me at +3" at 200 and at -2 1/2" at 300 if I remember correctly.  I don't have my data with me here at work but I'm pretty certain that's the numbers.
No need for adjustments out to 325 is in the kill zone. 

[JackOfAllTrades]

No need for adjustments out to 325 is in the kill zone. 

 (I thought this gun stuff was simple I guess I was wrong.   I will just keep shooting my bow at least I understand that stuff.) Yeah.. With a bow anything more than 30yds and a 10 degree down angle you need to adjust.  So I don't see how the rifle stuff is perplexing.

-Steve

[D-Rock425]

No need for adjustments out to 325 is in the kill zone. 

 (I thought this gun stuff was simple I guess I was wrong.   I will just keep shooting my bow at least I understand that stuff.) Yeah.. With a bow anything more than 30yds and a 10 degree down angle you need to adjust.  So I don't see how the rifle stuff is perplexing.with my bow a 30 degree angle at 40 yards is s difference of 5 yards I would need to shoot the shot for 35 yards.  When I said my bow stuff was simple I meant its simple because I know my pins get sighted in at 20 30 40 50 and 60 yards.

-Steve

[JackOfAllTrades]

No need for adjustments out to 325 is in the kill zone

Doesn't get any more simple than that. No pins. No five or ten yard adjustments.

-Steve

[BOWHUNTER45]

I dont know how some of these ballistics are coming up but all I can tell ya is when shooting in my .270 with 140 gr hornaday SPBT I zero in at 1 1/2 inches high at 100 ( from the center of the bullseye ) 3 inches is way to high ...one day your going to shoot down hill or up hill and your going over top of your target.. I am dead on out to 300 yrds with this load and it has not ever failed me yet .. I have made alot futher shoots and it is still the same result ( deadly) again its all on the shooter .... PEACE !!!

[ICEMAN]

I dont know how some of these ballistics are coming up but all I can tell ya is when shooting in my .270 with 140 gr hornaday SPBT I zero in at 1 1/2 inches high at 100 ( from the center of the bullseye ) 3 inches is way to high ...one day your going to shoot down hill or up hill and your going over top of your target.. I am dead on out to 300 yrds with this load and it has not ever failed me yet .. I have made alot futher shoots and it is still the same result ( deadly) again its all on the shooter .... PEACE !!!

What do you mean you are dead on out to 300 yards?

[D-Rock425]

 

[huntinfool86]

i used to shoot a 7mm you want to be 11/2 high at a 100yds dead on at 200yds and the rest you can go to winchester.com or federal.com to get the rest of the ballistics. i recommend printed your ballistics out and laminating it, then taping it to your stock

[sakoshooter]

I dont know how some of these ballistics are coming up but all I can tell ya is when shooting in my .270 with 140 gr hornaday SPBT I zero in at 1 1/2 inches high at 100 ( from the center of the bullseye ) 3 inches is way to high ...one day your going to shoot down hill or up hill and your going over top of your target.. I am dead on out to 300 yrds with this load and it has not ever failed me yet .. I have made alot futher shoots and it is still the same result ( deadly) again its all on the shooter .... PEACE !!!

According to the Berger ballistic chart, sighting in +1.5" @ 100 makes you dead on @ 192yds. You're 7.79" low at 300yds. 21.84" low at 400yds and 43.67" low at 500yds. Your MPBR is about 235yds using a 6" vital zone.
I used a G1 BC of .450 and was generous and gave you 2900fps. I also used 60 degrees. If it's close to freezing during hunting season, the velocity will be less and consequently the ballistics will look worse.

Changing that +1.5" @ 100yd sight in to +3" @ 100yds doesn't really change anything significantly up close but increases your MPBR to about 290yds and dead on @ 258yds. 3.23" low @ 300yds, 15.76" low @ 400yds and 36" low @ 500yds.

As you can see, an inch and a half bought you 55yds of not thinking about where to hold your X hairs.

[Bob33]

Changing that +1.5" @ 100yd sight in to +3" @ 100yds doesn't really change anything significantly up close but increases your MPBR to about 290yds and dead on @ 258yds. 3.23" low @ 300yds, 15.76" low @ 400yds and 36" low @ 500yds.

As you can see, an inch and a half bought you 55yds of not thinking about where to hold your X hairs.

I agree with your ballistics.  The only caution I would add: being 3" high at 100 yards with this data means the bullet is still rising relative to the point of aim. The bullet will reach a maximum height ("Mid Range Trajectory") of about 3.5 inches at around 150 yards.  If you happen to shoot 3 or 4 inches higher than your intended point of aim, the bullet will hit 7" high.  That could be enough to miss a smaller animal.  I used to sight in for 3" high, but shot high on too many animals at mid range (150 to 200 yards).  I always remember to hold high at longer distances, but I never remember to hold low at closer distances.  The solution: I dropped my 100 yard impact to 2.5" high.  It shaves a half inch off the MRT which isn't much, but it helps.

My advice to all is to always check the mid range trajectory.  If you can, shoot some paper targets at that distance.  You might be stunned to see how high the bullet impact is.

[sakoshooter]

Bob33,
Agreed. Know your bullet's trajectory. That's all I was trying to point out. It would seem by some of what I've read that some folks think a bullet travels flat for a given distance then mysteriously falls.

[ICEMAN]

Sako, I agree with your logic. I have sighted my 300RUM for +2.0 at 200yards.... This puts me at -3" at 300 yards.
 
I shoot down the proverbial pipe out to 300yards, my round never outside of my line of sight more than a total of 3 inches high or low...
 
I too have my ballistics taped to the side of my rifle for anytime I may need to look at it for maybe a shot further than 300 (which I have never taken at game...)  I do know I can repetitously hit a pop can at 300yards as long as I have a good rest...
 
In theory; for game under 300 yards, I should be able to shoot center of lung and not worry about trajectory, hitting within 3" of my point of aim... 
 
(sounds good on paper...    )

[Bob33]

It would seem by some of what I've read that some folks think a bullet travels flat for a given distance then mysteriously falls.

That's only true for "magnums".  All other rounds fall right out the end of the barrel and go straight down.

[sakoshooter]

It would seem by some of what I've read that some folks think a bullet travels flat for a given distance then mysteriously falls.

That's only true for "magnums".  All other rounds fall right out the end of the barrel and go straight down.

You're too funny Bob.