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Post by smsnyder on Mon Aug 17, 2020 3:33 pm

I am shooting a Ruger 204 40 gr Hornaday v max bullet out of a 14 inch contender. About 4000 FPS.  So far I had several groundhog kill shots over 250 yards. Just bought a vortex scope that has MOA readings etched in the glass . Its a 3x18x44 strike eagle scope. Its simply a stunning scope. $500 scope for $299 at Euro Optics. Its is every bit as good as my Zeiss and Swarovski scope. My ruger drop chart is as follows according to hornaday.   100 yards 0.7, 200 yards 0, 300 yards -4.3, 400 yards -13.2, 500 yards -28.1. I need to convert the bullet drop inches to MOA . Thanks


Last edited by smsnyder on Mon Aug 17, 2020 3:41 pm; edited 2 times in total

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Post by smsnyder on Mon Aug 17, 2020 3:37 pm

I need a moa expert here 20200831

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Post by smsnyder on Mon Aug 17, 2020 3:38 pm

This was the old scope on the pistol. I went to a higher power scope. Just had a 1 pound trigger job.

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Post by smsnyder on Mon Aug 17, 2020 3:51 pm

I need a moa expert here 20200832

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Post by smsnyder on Mon Aug 17, 2020 4:04 pm

Each hash mark is 1 MOA

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Post by Olde Pilot on Mon Aug 17, 2020 4:15 pm

1 MOA @ 100 yds =1.047 inches. So, divide bullet drop by 1.047 to get MOA's. 

For example, 400yd drop is 13.2 in divided by 1.047=12.6 MOA. In short since 1 MOA is so close to 1", fancy calculations are not really necessary in the real world.

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Post by zanemoseley on Mon Aug 17, 2020 4:18 pm

A MOA is roughly equal to 1" at 100 yards, 4" at 400 yards ect...  So if your gun has a 13.2" drop at 400 yard then you'll divide by 4 to get to a 3.3 moa drop. If you want to delve deeper into ballistics check out the Strelok app, its free and quite good, I use it for my rifles to calculate drop out to 1000 yards.

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Post by zanemoseley on Mon Aug 17, 2020 4:19 pm

Olde Pilot wrote:1 MOA @ 100 yds =1.047 inches. So, divide bullet drop by 1.047 to get MOA's. 

For example, 400yd drop is 13.2 in divided by 1.047=12.6 MOA. In short since 1 MOA is so close to 1", fancy calculations are not really necessary in the real world.
Your calculations are incorrect.

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Post by JKR on Mon Aug 17, 2020 4:19 pm

That’s a lot of business going on there on that reticle. Most of it you’ll never use. 
From what I can see the first hash mark below center is two minutes of elevation. After that it changes to one minute increments. Simply put, one MOA is one inch at 100 yds, 2 inches at 200, 3 inches at 300, and so on. If your gun is zeroed at 200 yds, and Mr. Groundhog is settin’ up pretty out at 300, hold the hash mark with the 4 beside it right on his noggin and squeeze!
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Post by Olde Pilot on Mon Aug 17, 2020 4:24 pm

Sorry, y'all are correct.

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Post by smsnyder on Mon Aug 17, 2020 5:22 pm

I hated math in high school. Lol

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Post by smsnyder on Mon Aug 17, 2020 5:26 pm

I need a moa expert here Pizza-10I need a moa expert here Pizza-10I need a moa expert here Pizza-10

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Post by smsnyder on Mon Aug 17, 2020 5:28 pm

This is the groundhog I am after. He stole my pizza. Lol

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Post by Jack H on Mon Aug 17, 2020 5:47 pm

My own spreadsheet gives these yardages and drop values based on 4000fps, BC=.275 and the zero at 200.  Also the usual 1.5" scope above bore.

1000.6
1250.7
1500.7
1750.4
2000.0
225-0.6
250-1.5
275-2.6
300-3.9
325-5.5
350-7.4
375-9.5
400-12.0
425-14.8
450-18.0
475-21.6
500-25.6
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Post by smsnyder on Mon Aug 17, 2020 5:53 pm

Thanks a bunch. Is the numbers on the right moa crosshair markings in the scope?

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Post by smsnyder on Mon Aug 17, 2020 5:54 pm

The bullet is still moving at 1800 fps at 500 yards.

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Post by Jack H on Mon Aug 17, 2020 6:38 pm

More from my spreadsheet
RV = remaining velicity.  Time to 500 = .5 sec

RangePathR.V.Energy
25-0.839011352
50-0.238041286
750.337081221
1000.636131160
1250.735191100
1500.734271043
1750.43335988
2000.03245936
225-0.63157885
250-1.53069837
275-2.62983790
300-3.92898746
325-5.52814703
350-7.42731663
375-9.52650624
400-12.02570587
425-14.82491551
450-18.02413517
475-21.62337485
500-25.62261454
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Post by smsnyder on Mon Aug 17, 2020 6:42 pm

Is the path of the bullet is what I use on the moa hash marks?

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Post by Jack H on Mon Aug 17, 2020 6:53 pm

Path chart (inches) = drop chart.
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Post by smsnyder on Mon Aug 17, 2020 7:04 pm

I know the drop in inches but my scope hash Mark's are in moa.

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Post by Jack H on Mon Aug 17, 2020 7:11 pm

Divide the drop in inches by the yards divided by 100
For 275y:  2.6"/(275y/100)
for 500y:   25.6"/(500y/100)


Last edited by Jack H on Mon Aug 17, 2020 8:50 pm; edited 1 time in total
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Post by smsnyder on Mon Aug 17, 2020 7:19 pm

Heck I have to take off my shoes to count. Lol

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Post by mikemyers on Mon Aug 17, 2020 7:57 pm

Better watch out, he or she may be armed!!!!

I need a moa expert here Phils-little-brother-bobby
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Post by Domino1 on Mon Aug 17, 2020 8:07 pm

If the groundhog is as close as in the picture you probably don't need to worry about MOA!

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Post by smsnyder on Tue Aug 18, 2020 8:43 am

Is this right ??? 28.1 inch bullet drop divided by 500 yards divided by 100 =562 MOA in my scope? So i would have to use the 5 hash/crosshair mark in the scope? All hash parks are 1 moa apart in the scope.

 12 inch bullet drop divided by 400 yards divided by 100 =0.0003.  So i would have to put the Moa crosshair in the scope on number 3 hash mark?

Wow i even have 1 moa Turret knobs on the scope. now I have to figure out click adjustments. LOL

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