Rifle Scopes Question about the Vortex Viper PST mrad reticle

[JelloStorm]

Hopefully Vortex can answer this, but if anyone else has the answer that would be great.

What are the measurements of the 2.5-10 Viper PST MRAD reticle hasmarks and such. I'm not sure if it's called subtension or whatnot.

Here's an example of what I'm talking about:

mildot reticle dimensions

 

[dmg308]

Re: Question about the Vortex Viper PST mrad reticle

How about right off their site.

http://www.vortextactical.com/uploads/sub_viper-pst_210s1-mrad_details.jpg

 

[JelloStorm]

Re: Question about the Vortex Viper PST mrad reticle

Wow, totally blew right over that on my search.

Thanks dmg308!

 

[JelloStorm]

Re: Question about the Vortex Viper PST mrad reticle

I thought there'd be more has marks on the top line then there is..

 

[glock24]

Re: Question about the Vortex Viper PST mrad reticle

The detail that leaves me scratching my head is why they made different MRAD reticles for their FFP and SFP scopes.
I really like the FFP reticle better as it has a much finer resolution for milling targets.

Why Sam, why?



<span style="font-size: 17pt"><span style="font-weight: bold">SFP</span></span>

<span style="font-size: 17pt"><span style="font-weight: bold">FFP</span></span>

 

[AJBello]

Re: Question about the Vortex Viper PST mrad reticle

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: glock24</div><div class="ubbcode-body">The detail that leaves me scratching my head is why they made different MRAD reticles for their FFP and SFP scopes.
I really like the FFP reticle better as it has a much finer resolution for milling targets.

Why Sam, why?
</div></div>
Already asked and answered.

 

[glock24]

Re: Question about the Vortex Viper PST mrad reticle

Thanks, but not quite.

Regardless of FOV differences, I'm still unclear why I can't have 0.5 MRAD spacing on the SFP reticle all the way to the thicker Plex lines, particularly on the horizontal cross-hair where it would be used to hold windage. And of course the 0.2 MRAD spacing would have been awesome for milling small targets.

 

[JelloStorm]

Re: Question about the Vortex Viper PST mrad reticle

Why would the FFP and SFP reticles be that much different do you think?

For what I can afford, the Viper PST seems a God-send but I'm getting a lot of conflicting data from people who may be used to NF or USO and Leupold... why is this from a standpoint that can be explained to a noob that can understand who is buying his first mil scope??

 

[Grump]

Re: Question about the Vortex Viper PST mrad reticle

Having just used a FFP scope and milled what turned out to be an exact 36-inch object at an exact 600 yards as a visually estimated 1.7 mils using just 0.5-mil hashmarks (it was less than halfway between marks, which would have been 1.75 mils), I can tell you that the .2-mil marks on the Viper's FFP scope would have been great to reduce that 2% error from my eyeballs' estimate.

Think about that. 2% error with nothing finer than 0.5 mil hashmarks.

Now, I started playing with this stuff in the 1980s using a SFP scope ranging on a target size of 16 inches if calibrated for yards, or 18 inches if meters. I was lucky to keep it within 5% error.

FFP is the way to go, so long as you test the subtention to make sure the grid is accurate. If not, it's bothersome but you can factor in the percentage or fudge your formula.

FFP is the way to go, but I still like the idea of a "thick-enough" SFP crosshair for low light that the FFP hash marks "grow" out of as you zoom in. The SFP crosshair should stop far enough away from the edge to keep whatever fine hashmarks the SFP reticle has usefully visible on lower magnifications.

 

[Dumb_Like_Fox]

Re: Question about the Vortex Viper PST mrad reticle

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Grump</div><div class="ubbcode-body">

FFP is the way to go, but I still like the idea of a "thick-enough" SFP crosshair for low light that the FFP hash marks "grow" out of as you zoom in. The SFP crosshair should stop far enough away from the edge to keep whatever fine hashmarks the SFP reticle has usefully visible on lower magnifications. </div></div>

Wouldn't the illumination counter the thin reticle under lowlight conditions?