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scopes that use ballistic type recticle?

 
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  #8  
Old 02-02-2004, 10:13 PM
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Location: Alabama
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Re: scopes that use ballistic type recticle?

As Ryan stated, Premier Reticles can produce any reticle you want if you provide inches required between stadia lines. A conversion to 1st plane reticle is even possible with some Leupold variables so that the value subtended is constant across the scope's magnification range.
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  #9  
Old 02-03-2004, 07:52 AM
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Location: Washington State
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Re: scopes that use ballistic type recticle?

If I may, I would like to make two points.

1. Putting round specific information on the reticle assumes that the shooter will always be operating in the same set of environmental parameters. (Barometric Pressure, Temperature, Wind, etc.) So it is better to work with a measuring reticle such as a Mil Dot or Premier's Gen II.

2. However, MIL Dot and it's derivatives were designed to work in the metric system.

My current favorite therefore is a reticle calibrated in MOA. The WERM formula for such a reticle is:

Height Target(in) x 100
_______________________ = Range(Yards)

Height Target(MOA)


Note that the scope adjusts in moa as well, so there is no problem with multiple systems or strange conversion numbers. Further, if your come up chart is in inches, you just put that number on the reticle on the target and squeeze. No conversion charts, MilDot sliders, etc.

For example, if you were IAN and your target was at 450 yards, you just center the 7.5 line on the heart of that big Elk and bang.

[ 02-24-2004: Message edited by: DMCI ]
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  #10  
Old 02-03-2004, 09:35 AM
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Re: scopes that use ballistic type recticle?

DMCI,
Do you have any idea how fine the manufacturers could make graduations? Could they do 1 moa tick marks, hashmarks or whatever, if so would they be useable? Could they do matching numbers that would be readable?

I have always wondered why the mildot design does not have 1/10s right on the reticles.
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  #11  
Old 02-03-2004, 10:50 AM
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Join Date: Oct 2003
Location: Washington State
Posts: 120
Re: scopes that use ballistic type recticle?

2 moa or .2 mil seems by experience to be about the finest increments practical. Premiers Gen II is a little courser with .5 MIL increments.

Here is the Horus H-25 with .2 Mil increments on the main axis and 2 MOA on the sub-axis:



[ 02-24-2004: Message edited by: DMCI ]
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  #12  
Old 02-03-2004, 11:04 AM
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Posts: 1,459
Re: scopes that use ballistic type recticle?

For me, I go with IanM recommendations and dial up elevation. If there is not enough time to turn a dial, there is not enough time to shoot at the game.

I hunt LR alone most of the time and this is how I set up. Find a place, get comfy with rifle and spotting scope, glass till find appropriate game. Range, dial up, watch conditions, put a bullet through the ribs, get out the knife.

It is not a hurried sport. Too much can go wrong if you can't watch the conditions or get a proper rest. So the time it takes to dial in the elevation you need is minor.

I have scopes with mil-dots and use them to adjust my shots. I don't use them to range as they can be too inaccurate at longer ranges, plus it reduces the flexibility of the scopes and its magnification.

I like the idea of a MOA reticle. Much more intuitive then the mil-dot. The only problem is that under 2MOA spacing, the dots are going to be very close together and hard to see. Had a scope that had something similar and trying to count all those little dots was a real pain.

For most ranges inside 1000yds and flat magnums, the 2MOA spacings will be plenty. I think this will be the replacement for the mildot. Whoever thought up that system was probably an engineer, not a shooter.

Fractions, any math, calculators are simply not items well suited to under stress shooting.

As to the Ballistic type reticles, they work if your load fits. Otherwise, they are more of a liability then aid. Most are spaced 100yds apart. At ranges beyond 500yds, the gap between hash marks is going to be pretty large so you will be guesstimating on a verticle reticle against the side of an animal. No thanks...

Jerry
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  #13  
Old 02-15-2004, 10:17 PM
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Join Date: Jan 2004
Location: DFW
Posts: 1
Re: scopes that use ballistic type recticle?

Actually guys, Mil Dot as developed by the Corps is based on radians and not degrees. Minute of Angle is in Degrees. The beauty of the Mil Dot system is allows the choice of the Spacing of the Dots to be something the Shooter is comfortable with, ie Meter or Yard (36 inches at a 1000 yrd or meters. The use of Radians over Degrees causes less discrepency in the optical measuring system than does Degrees. This is because the Mil Dot spacing works out to be 3.6 inches at 100 Yards and 2.5cm at 100 meters. 3.6 inches at 100Yards is 0.05733 degress or 3.44 minutes. if one takes a scientific calculator and converts degrees to radians ie 360 degrees = 2PI Radians, we find the spacing equals 0.00100065 radian or 1 milliradian. Hence the choice of the dot spacing.
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