vortex pst tracking

flyerhawk19

flyerhawk19

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SE man.
Seen some posts here about the PST (6-24x50) tracking an oval not a square if adjustments are near the end of its range.

Does anybody know the max amount of Mrads the PST can while still tracking a square?

On the Mrad model obviously.
 
I would imagine with the windage mechanically centered it will track perfectly straight on elevation for the entire advertised adjustment range. Where you will run into issues is when you have a lot of wind dialed (ie slightly off scope/bore alignment) and want to use the adjustment near the ends of the elevation range. Exactly when you start to encounter issues will likely depend heavily on how much windage you have dialed from the mechanical center or the windage adjustment.

Edit: Think of trying to fit a rectangle complete inside a circle... you can either fit a short and fat one, a tall and narrow one, or a perfect square, which would limit your elevation adjustment.
 
I just received one on friday but I don't think I will run into any problems. I can't see myself using up all the windage adjustments anyways. And I will probably be using rings with inserts or a scope/bore alignment problem will be minimal.
 
BeerBaron said:
I would imagine with the windage mechanically centered it will track perfectly straight on elevation for the entire advertised adjustment range. Where you will run into issues is when you have a lot of wind dialed (ie slightly off scope/bore alignment) and want to use the adjustment near the ends of the elevation range. Exactly when you start to encounter issues will likely depend heavily on how much windage you have dialed from the mechanical center or the windage adjustment.

Edit: Think of trying to fit a rectangle complete inside a circle... you can either fit a short and fat one, a tall and narrow one, or a perfect square, which would limit your elevation adjustment.
Click to expand...

Exactly.

I've actually measured the amount of travel the PST 6-24x50 FFP has at center, and at the extreme edge of windage travel. As soon as I get back to my reloading table and notebook, I'll give an update with what I found with my scope.
 
Yes max elevation I understand but not with max wind. I don't ever see the need for that much wind. My PST has 65 MOA of wind adjustment so that's 32.5 on either side. I plugged the numbers into a ballistic calculating and that means your would be shooting in a 140 mph cross wind, no??
 
Yep but you wouldn't get max. Wind. In fact when you are at the xtense of the vertical travel to accomadte the base, your wind age could be very limited and the opposite is true for ultra long range. When you have dialled in 60MOA to shoot 1500 yards with a full value 20mph cross wind you would need close to 30moa for .308 175gnSMK.
 
Just got back to my notebook/reloading bench. According to my optical grid magnetic bore sighter, my 6-24x50 PST FFP MOA has 70MOA of total range in the turret, but the erector assembly actually moves 69MOA when the windage is perfectly mechanically centered. When the windage is maxed out to one side, the elevation erector assembly has a range of 22MOA. My rifle is zero'd 5.75MOA left of mechanical center, and I have a range in the elevation erector of 68MOA remaining.

If converted to mils, I would have a total elevation erector range of 20mil when windage is at mechanical center, and when at the extreme windage adjustment, it would have 6.3mil.

When spinning the turrets outside of these working erector ranges, the reticle still moves, but it moves in a circular arc, following the contour of the scope tube that the erector assembly is riding against.
 
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