ML question

[Urban_Hunter]

If you were dialed in at 100yds, would it at all be possible to be 2" low at 50?

I was dialed in at 100 last year. This year I haven't gotten to the range but checked it tonight at 50 and I'm 2" low. I shot 2 more times and clover leafed. Trying to figure out if it got bumped or if it's normal?

 

[mr.big]

I would say you need to adjust your scope up and shoot it again,,up 16 clix should get you zeroed at 50 yards and then maybe 8 more clix to get on at 100,,if I was hunting tomorrow morning with that rifle I would shoot it tonight if I had to use a spotlight,,

2" low at 50 is gonna be lower at 100 and dangerously low at 150,,

edit,,,2 inches at 50 yards would be 16 clix instead of 8 and to be an inch high at 50 would take 8 more clix,,,

what bullet and speed are you shooting and I can run the numbers to tell yo exactly how much to adjust for a 100 zero,,,if you trust your scopes tracking,,,,

 

[Deer Assassin]

ditto eric

 

[mr.big]

IDK what load your shooting but a 240 gr XTP at 1900 fps should be 1 inch high at 50 to be on at 100,,,you are 3 inches low at 50 from being zeroed at 100 which is a 6 MOA adjustment,,assuming a 2 inch scope height and the load listed,,

 

[wsm]

I would never guess always shoot to see where you hit ,we own the game that much. IMO

 

[Urban_Hunter]

Hmmm not what I was hoping for.

It's a 250gr Shockwave on top of two 50gr pyrodex pellets with a 209. I've never chrono'd my ML, no idea on fps. I can't shoot 100yds off my porch without shooting over the top of a hill, 50 is all I safely have. Guess I'll bust out the spot light [emoji1]

 

[mr.big]

move it up 24 clix and if it is close to 1 inch high at 50 it should be really close at 100,,and 4-5 inches low at 150,

 

[Urban_Hunter]

And it's a vxiii. I trust the scope more than the rifle. Must have gotten dinged. My safe is very tight.

 

[mr.big]

taking a mzl apart to clean and putting it back together can cause zero shifts also,,

any way,,by the JBM program if you get it 1 inch high at 50 you will be dead on at 100,,and if you are 2 inches low that should take 24 clix on the VXIII,but I would still check it,,

it will take 8 clix to move an inch at 50 yards

 

[Aquaholic]

If it's zeroed at 100 it will shoot low closer in ... How much depends on how high of scope mounts you have

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[MickThompson]

How old are the pellets?


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[Aquaholic]

If it's zeroed at 100 it will shoot low closer in ... How much depends on how high of scope mounts you have

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.

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[mr.big]

If it's zeroed at 100 it will shoot low closer in ... How much depends on how high of scope mounts you have

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with a 2" scope height it will be low out to 28 yards and be dead on at 30 yards where it will start rising to about 3/4" high at 65-70 yards where it will start dropping back to be dead on at 100 yards,,

 

[Aquaholic]

If it's zeroed at 100 it will shoot low closer in ... How much depends on how high of scope mounts you have

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with a 2" scope height it will be low out to 28 yards and be dead on at 30 yards where it will start rising to about 3/4" high at 65-70 yards where it will start dropping back to be dead on at 100 yards,,

Might want to look at the ballistics ^^^^^

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[Aquaholic]

And a bullet doesn't actually rise ... The muzzle is pointing up towards the scope straight line of sight when fired ... this is why you want a scope to be mounted on lowest mounts possible

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[mr.big]

If it's zeroed at 100 it will shoot low closer in ... How much depends on how high of scope mounts you have

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with a 2" scope height it will be low out to 28 yards and be dead on at 30 yards where it will start rising to about 3/4" high at 65-70 yards where it will start dropping back to be dead on at 100 yards,,

Might want to look at the ballistics ^^^^^

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I did and what I posted is exactly what you posted except I used a 2 inch scope height where they used 1.5 inches,,,

an inch high at 50 will be dead on at 100,,

the bullet can never hit lower on target than how high the scope is mounted,and it will start going up as soon as it leaves the mzl and continue up until it is about 2/3rds of its zero range where it will start coming back down,,

 

[Aquaholic]

Correct ... But if it's zeroed at 100 it will be lower before it hits 100 yards

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[mr.big]

And a bullet doesn't actually rise ... The muzzle is pointing up towards the scope straight line of sight when fired ... this is why you want a scope to be mounted on lowest mounts possible

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you can call it whatever but the bullet will come out the bbl and hit the target low at 10 yards and hit higher at 20,30,40,50,60 and level off at 65-75 and start hitting lower on the target at 80 and it will hit lower ever yard from there on out,,

 

[Aquaholic]

If that works for you stick with it...

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[mr.big]

with the load in question zeroed at 100 yards with a 1.5 inch scope height to match the chart listed above JBM`s solution at 30*F and 50% humidity at 800' ASL looks like this ,,

0 -1.5"
10 -.9"
20 -.3"
30 +.1"
40 +.4"
50 +.75"
60 +.85"
70 +.85"
80 +.68"
90 +.40"
100 ZERO
110 -.6
120 -1.2
130 -2.1"
140 -3.5"
150 -5.2"

 

[Remington742]

I had the same question you had except mine was a shotgun. Someone posted a picture similar to this and it was a great help.

 

[pressfit]

I had the same question you had except mine was a shotgun. Someone posted a picture similar to this and it was a great help.

So if both rifles were shooting 233.. the only difference I see between the precision rifle and the combat rifle is the scope height..??

 

[ImThere]

If it's zeroed at 100 it will shoot low closer in ... How much depends on how high of scope mounts you have

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.

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it looks like your own post proves you wrong there Aquaholic. The lowest point is 1.5" height of scope. every load is high at 50yds the distance in question.


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[Remington742]

I had the same question you had except mine was a shotgun. Someone posted a picture similar to this and it was a great help.

So if both rifles were shooting 233.. the only difference I see between the precision rifle and the combat rifle is the scope height..??

Basically yes. The way it reads is at 100 yrds your dead on and at 50 the bullet hasn't risen to hit center. Therefore causing your bullet to hit low at 50. I had the same problem with a slug gun and decided to zero 1 inch high at 50 yrds but that was only because my longest shot won't be over 75 yrds

 

[dbierman]

If the bullets trajectory peaks at 100yds (would appear as a 100 yd zero) instead of peaking at 65-75 yards then dropping down it will be low at 50yds. It would never be lower than the height of the scope above the barrel.

 

[Huntaholic]

Eric is right, if its low at 50 its gonna be even lower at 100. Some people need to actually shoot their guns at different distances instead of relying on a chart or graph.

 

[dbierman]

Eric is right, if its low at 50 its gonna be even lower at 100. Some people need to actually shoot their guns at different distances instead of relying on a chart or graph.

Can you explain what you're saying?

 

[Urban_Hunter]

Eric is right, if its low at 50 its gonna be even lower at 100. Some people need to actually shoot their guns at different distances instead of relying on a chart or graph.

If you are referring to me I was simply asking if it was possible to be low at 50 after sighting in at 100 due to the rise and fall of the boolit. I wasn't asking to dope a ML. After shooting at 100 Saturday I determined Mr.Big was wrong, He said 24 clicks would put me an inch high at 100. In actuality my group average was 1-1/4" high. What does he know about ballistics anyways [emoji1]

Guess my verdict is the scope was either bumped or zero moved from last year's disassembly and reassembly.

 

[mr.big]

Eric is right, if its low at 50 its gonna be even lower at 100. Some people need to actually shoot their guns at different distances instead of relying on a chart or graph.

If you are referring to me I was simply asking if it was possible to be low at 50 after sighting in at 100 due to the rise and fall of the boolit. I wasn't asking to dope a ML. After shooting at 100 Saturday I determined Mr.Big was wrong, He said 24 clicks would put me an inch high at 100. In actuality my group average was 1-1/4" high. What does he know about ballistics anyways [emoji1]

Guess my verdict is the scope was either bumped or zero moved from last year's disassembly and reassembly.

thats why I only use my math and calculations as a general guideline and actually shoot and confirm ,,but most times it will be within a couple clix one way or the other,,

solid mounts and good tracking scopes help a lot,,