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Old 12-04-2013, 03:36 AM
  #11  
Nontypical Buck
 
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Something is not right! You cannot be "sighted in" at 100 AND 250.

The bullet MUST cross the line of sight at around 20 - 25 yds or so, and then be HIGH of the line of sight all the way to the zero range. For a 30/06 that should be around 225 - 250 yds. After that point, the bullet will be low of the line of sight. Therefore, the bullet will ONLY be low of the line of sight between the muzzle and 25 yds (a max of 2.5 inches and that is right at the muzzle), and beyond the zero range (250 yds or so).

I have to guess at your scope height relative to the bore of the gun, but I'm assuming 2.5". Also assuming 2700 fps for your 180 gr bullet, which may be a little high but not enough to matter.

Here are the ballisticcs you should get:

50 yds = 0.8" HIGH
100 yds = 2.8" HIGH
150 yds = 3.5" HIGH
200 yds = 2.6" HIGH
250 yds = 0
300 yds = 4.3" LOW

If your gun is actually hitting 3-4" low at 35 yds, you'll be way, way, way low at 100 yds. Forget about 200 - 300.

Based on what you are saying about "hold over at close range" you are missing the concept completely. The gun should be sighted in so that hold over is only required beyond maximum point blank range, which in the case I've provided would be about 275 yds. For any shot between 0 and 275 yds, aim dead on and shoot. You'll never be more than about 3" high or low. I can't tell you what to do, but holding over 3-4" at 35 yds makes no sense.

Last edited by UncleNorby; 12-04-2013 at 03:42 AM.
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Old 12-04-2013, 05:57 AM
  #12  
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Congratulations. All of my bucks were taking in heavily wooded locations within 30 yards. Way to go. cketke swawmp

I use a 30.30 For crawling through thickets, swamps, tick infested clear cuts. 300 Win mag for long hikes, and a joy to carry.
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Old 12-04-2013, 07:02 AM
  #13  
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Originally Posted by UncleNorby
Something is not right! You cannot be "sighted in" at 100 AND 250.

The bullet MUST cross the line of sight at around 20 - 25 yds or so, and then be HIGH of the line of sight all the way to the zero range. For a 30/06 that should be around 225 - 250 yds. After that point, the bullet will be low of the line of sight. Therefore, the bullet will ONLY be low of the line of sight between the muzzle and 25 yds (a max of 2.5 inches and that is right at the muzzle), and beyond the zero range (250 yds or so).

I have to guess at your scope height relative to the bore of the gun, but I'm assuming 2.5". Also assuming 2700 fps for your 180 gr bullet, which may be a little high but not enough to matter.

Here are the ballisticcs you should get:

50 yds = 0.8" HIGH
100 yds = 2.8" HIGH
150 yds = 3.5" HIGH
200 yds = 2.6" HIGH
250 yds = 0
300 yds = 4.3" LOW

If your gun is actually hitting 3-4" low at 35 yds, you'll be way, way, way low at 100 yds. Forget about 200 - 300.

Based on what you are saying about "hold over at close range" you are missing the concept completely. The gun should be sighted in so that hold over is only required beyond maximum point blank range, which in the case I've provided would be about 275 yds. For any shot between 0 and 275 yds, aim dead on and shoot. You'll never be more than about 3" high or low. I can't tell you what to do, but holding over 3-4" at 35 yds makes no sense.
This is taken from gundata.org and it does confirm my hold over at a shorter range with the 30-06 being shot in at 100 yards.



At 250, I cannot account for my 1 shot bullseye with the hold over at 0. I'll have to shoot some brass again to see where I made my mistake unless I had already accounted for bullet drop although I have been only shooting the 30-06 for deer season the last 2 years and mostly focusing on pistol, .22, and my AR-15 which has it's zero at 50 yards and 300.

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Old 12-04-2013, 08:18 AM
  #14  
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The bullet starts below line of sight, how far depends on your scope rings. If you are saying you are 3-4 LOW at 40 yds, that means one of two things:

- Your rings put your scope 3-4 inches ABOVE the barrel or
- Your bullet is dropping when it leaves the barrel (if so, then it will NEVER be on target)

The chart you show above shows 1.5 inches low coming out of the gun (not your 3-4) and climbing UP to level at 90-100 yds, then dropping below.
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Old 12-04-2013, 12:18 PM
  #15  
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Your chart confirms what I told you. As Bob H noted, your chart shows the bullet at 1.5" low max (at the Muzzle)

Since you are using that software, adjust you r zero range to 225 or 250, and see the resulting tragectory. You'll be much happier with it. Sight in for 3" high at 100, and you'll be good to go. No hold over or under from 0 to 250 yds.
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Old 12-04-2013, 05:24 PM
  #16  
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Congrats on a nice deer
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Old 12-05-2013, 02:40 PM
  #17  
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Yeah I think I get what you are saying. I guess I can't account for any of my hold overs even according to the chart. I'll have to just put some rounds down on paper again from the table and see where it all falls. I do know the 180's were 3-4 inches low on the paper at the close range. I could have anticipated recoil or something? I'll take it along next trip to the range which should come soon after season. Going out Saturday for a doe.
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Old 12-05-2013, 03:31 PM
  #18  
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Originally Posted by UncleNorby
Something is not right! You cannot be "sighted in" at 100 AND 250.

The bullet MUST cross the line of sight at around 20 - 25 yds or so, and then be HIGH of the line of sight all the way to the zero range. For a 30/06 that should be around 225 - 250 yds. After that point, the bullet will be low of the line of sight. Therefore, the bullet will ONLY be low of the line of sight between the muzzle and 25 yds (a max of 2.5 inches and that is right at the muzzle), and beyond the zero range (250 yds or so).

I have to guess at your scope height relative to the bore of the gun, but I'm assuming 2.5". Also assuming 2700 fps for your 180 gr bullet, which may be a little high but not enough to matter.

Here are the ballisticcs you should get:

50 yds = 0.8" HIGH
100 yds = 2.8" HIGH
150 yds = 3.5" HIGH
200 yds = 2.6" HIGH
250 yds = 0
300 yds = 4.3" LOW

If your gun is actually hitting 3-4" low at 35 yds, you'll be way, way, way low at 100 yds. Forget about 200 - 300.

Based on what you are saying about "hold over at close range" you are missing the concept completely. The gun should be sighted in so that hold over is only required beyond maximum point blank range, which in the case I've provided would be about 275 yds. For any shot between 0 and 275 yds, aim dead on and shoot. You'll never be more than about 3" high or low. I can't tell you what to do, but holding over 3-4" at 35 yds makes no sense.
Very well put.
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Old 12-05-2013, 03:32 PM
  #19  
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Very nice buck to congratulations
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Old 12-06-2013, 03:22 AM
  #20  
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At the range be sure to have a good rest set up so you can use good consistent shooting form. Be consistent in all aspects, such as how your face rests on the stock, where you hold the gun and how tightly, where the forestock sits on the rest, etc. The front rest should be padded, not hard. Don't make adjustments until a group of 3 shots proves where you are hitting. Don't get the barrel too hot. It can help to have another gun (a light recoiling one) to shoot in between 30/06 groups, so that barrel can cool. Good shooting.
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