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Vortex PST 6-24x50 FFP

 
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  #1  
Old 10-17-2011, 09:54 PM
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Vortex PST 6-24x50 FFP

Ok out there. I have a Remington 700 in 308 and I am looking at the Vortex PST 6-24x50 FFP Scope. With the limit of 19 MilRads elevation what cant base do I need to stretch out my range? I know it's a long shot but I want to push it to 1000 yards. Please give me your input!
Thanks
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  #2  
Old 10-17-2011, 10:18 PM
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Re: Vortex PST 6-24x50 FFP

Quote:
Originally Posted by TacticalRem View Post
Ok out there. I have a Remington 700 in 308 and I am looking at the Vortex PST 6-24x50 FFP Scope. With the limit of 19 MilRads elevation what cant base do I need to stretch out my range? I know it's a long shot but I want to push it to 1000 yards. Please give me your input!
Thanks
19x3.9"(at one hundred)x 10=741"@1000yds.

Looking at somewhat generic load data from Hornady you should have plenty of adjustment to get there even with a zero MOA rail unless my brain is way off tonight; which is entirely possible.


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Ballistics Calculation



Input VariablesFirearm typeLongSight Height1.5Bullet Weight (grains)178Ballistic Coefficient.520Muzzle Velocity (fps)2750Temperature59Barometric Pressure (hg)29.53Relative Humidity78%Zero Range (yards)200Wind Speed (mph)0

Ballistics Table in Yards 178 gr., .520 B.C.www.hornady.comRange (yards)Muzzle1002003004005006007008009001000Velocity (fps)2750 2577 2411 2251 2096 1948 1807 1673 1548 1432 1327Energy (ft.-lb.)2989 2625 2297 2002 1737 1500 1291 1107 947 810 696Trajectory (200 yd. zero)-1.5 1.9 0.0 -7.8 -22.5 -45.2 -77.0 -119.5 -174.4 -244.0 -330.6Come Up in MOA-1.5 -1.8 0.0 2.5 5.4 8.6 12.3 16.3 20.8 25.9 31.6

The following table is provided as a "cheat sheet" that you can tape to your gun.
Ballistics Table in Yards 178 gr., .520 B.C.www.hornady.comRange (yards)Muzzle1002003004005006007008009001000Trajectory (200 yd. zero)-1.5 1.9 0.0 -7.8 -22.5 -45.2 -77.0 -119.5 -174.4 -244.0 -330.6Come Up in MOA-1.5 -1.8 0.0 2.5 5.4 8.6 12.3 16.3 20.8 25.9 31.6Ballistics Calculator v1.0
Hornady Mfg, Inc., by ARIS, Inc.
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  #3  
Old 10-17-2011, 10:49 PM
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Re: Vortex PST 6-24x50 FFP

Thanks!
But with 19 mrads won't I lose some of that zeroing the rifle. Some say as much as half! This is all mind boggling to me. I had a Nightforce with 100 moa but for my eyes it was not very clear.
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Old 10-17-2011, 11:08 PM
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Re: Vortex PST 6-24x50 FFP

Quote:
Originally Posted by TacticalRem View Post
Thanks!
But with 19 mrads won't I lose some of that zeroing the rifle. Some say as much as half! This is all mind boggling to me. I had a Nightforce with 100 moa but for my eyes it was not very clear.
No you won't lose your zero if it tracks true.

Personally I'd probably put it on a 10 MOA rail and set my zero for 300yds and just rip and roll from there. That would give you more than enough to really stretch it out if you want to.

Rereading your post I see better your question.

You might lose some of that in zeroing but again if I'm doing the math right you have 741" total adjustment for 1000yds. With the generic drop info I got off of the calculator you only need a maximum of 244" to get to 1000yds with a 200yds zero.

741-244=497" remaining.

It'd take something being really messed up to use up even a small fraction of that in zeroing.
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Last edited by WildRose; 10-17-2011 at 11:13 PM.
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  #5  
Old 10-18-2011, 06:37 AM
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Re: Vortex PST 6-24x50 FFP

Thanks for your help! The math doesn't lie.
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  #6  
Old 10-18-2011, 08:48 AM
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Re: Vortex PST 6-24x50 FFP

In my experience with the .308, if you want to have as close to full adjustment of your elevation, you will want to look into a 20MOA rail.

Tank
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