MOA QUESTIONS

[284winner]

Not sure what you are comparing to what, but at 1000 yards, 1 MOA is just less than 10-1/2 inches; 10.47" to be more precise.
At 1000 yds 5" is .48 MoA

The difference is 5" from 500-1000. That was my meaning. May not matter at 500 on an animal but will at 1000.

 

[Ned Ludd]

The difference is 5" from 500-1000. That was my meaning. May not matter at 500 on an animal but will at 1000.

You're off by a factor of 10. The difference between inches and MOA would be about 0.5" (10.472" - 10" = 0.472") at 1000 yd. And I really hope you're not taking regular shots at animals at 1000 yd.

 

[284winner]

You're off by a factor of 10. The difference between inches and MOA would be about 0.5" (10.472" - 10" = 0.472") at 1000 yd. And I really hope you're not taking regular shots at animals at 1000 yd.

There's inches and minutes of angle. Period. No factors. Don't make it more scientific than it is. An inch is an inch. A minute of angle is 1.047. It's the example I'm making that your either not getting or I'm not explaining well enough. Either way, moa is simply greater than inches no matter which way you measure drop or elevation. This comment i made wasn't to strike a members urge to let me know how unqualified I am at shooting an animal at 1000 yards. It was to simply help another guy understand moa vs inches. Maybe you should post a thread " If you can't explain moa vs inches well enough, you shouldn't shoot at game animals"! I'll be there. Have a great day.

 

[Ned Ludd]

One minute of angle subtends an arc of 1.0472 inches at 100 yd. At 1000 yd, that arc would be 10.472 inches. One inch at 100 yd would be equivalent dispersion to 10 inches at 1000 yd. The difference at 1000 yd is 0.472", not 5", which was my understanding of what you stated. That given difference value between the two systems was off by a factor of slightly more than 10. Perhaps I misunderstood your response as well. For most purposes, particularly at longer distances, the difference between the two is not one most can actually shoot. For nice tiny groups at 100 yd, it might actually make a difference.

 

[johnfred1965]

So there I am sitting at the range and I left my slide rule at the house....

How many of the young'uns on here thought "what the hell is a slide rule"?

 

[dickn52]

How many of the young'uns on here thought "what the hell is a slide rule"?

All of them most likely.

 

[T-shooter]

How many of the young'uns on here thought "what the hell is a slide rule"?

The same ones that believe there is no life without a cell phone and Facebook.

 

[dickn52]

All of them most likely.

My dad left me his 12 inch, leather case that he used for years as an engineer. He taught me some of the functions, but I've probably forgotten half of it.

 

[scubohuntr]

My dad left me his 12 inch, leather case that he used for years as an engineer. He taught me some of the functions, but I've probably forgotten half of it.

But can you still do Reverse Polish Notation?

 

[XTR]

But can you still do Reverse Polish Notation?

yes

 

[DRNewcomb]

My dad left me his 12 inch, leather case that he used for years as an engineer. He taught me some of the functions, but I've probably forgotten half of it.

I still have my old Darmstadt around here, somewhere. I pulled it out a while back to see if I could recall how to use it. Amazing, in college it was second nature to me.

 

[dickn52]

Mine is K&E and yes you can do RPN's with it.

 

[cdparker]

Mine is K&E and yes you can do RPN's with it.

In those Halcyon Days of Yesteryear we used a Freeden Hand crank and a book of 8 place sine tables. My HP45 and my current HP11c both worked in RPN. I actually prefer it.
One thing to keep in mind is that mechanically your scope may not actually give you 1/4" per click. Of course, you and your rifle may not be in sync with exactly the equivalent of 1 moa. Run a 4min. box and measure the actual distance your groups print. You may get different values for both windage and elevation. So many variables!
Did you know that the tube on an Artillery piece has a droop? You put that into your sight to go to Zero so that everyone starts out singing off the same sheet of music.