Adjusting MOA for Longer Range

[Mr Wick]

Having found my optimum load I am shooting exceptionally well at 500 yards. It's time to see how far I can take it. However, I do not have a spotter and have no reference chart that tells me how many MOA clicks to turn when increasing distance. Say 500 to 600 yards.

Do such charts exist or are there other ways of figuring it out.

As always.

Thanks.

 

[69mach]

i’ve moved on to a krestrel with ab but i used to use the bullet drop ap on my i phone and still use it for comparisons. it’s a free ap and it works pretty decent. it will get you in the ballpark but you need to proof shoot when you can. hornady also has a free ballistic calculator online you can use.

 

[Ajwilly96]

I use StrelokPro and it’s pretty accurate. It’s a phone app

 

[KRP]

JBM - Calculations

www.jbmballistics.com

 

[JMayo]

A 12" x12" white steel plate for a sighter.
From 100yds my 1/8 NF 6bra it's 12 + - #s

 

[jamesk]

+1 for StrelokPro and steel plate

 

[Goodcat]

Strelok works great. I’ve found Hornady 4dof to be a much more friendly interface though. Ballistic AE is my favorite app for just generating tables.

 

[Twdmar]

for a generic load, old highpower shooters used a simple formula for come-ups. Its based on 308 but it somewhat follows for a lot of cartridges
100-200 yards come up 2moa
200-300 3moa
300-400 3moa
400-500 4
500-600 4
600-700 5
700-800 5
800-900 6
900-1000 6

If you remember that easy formula, it will sorta get you there without a ballistic app.

 

[NZ_Fclass]

I use JBM. All my dope sheets are docs on the IPad I use at the range and on my phone. As a a back up, I have the Lapua app on the phone too.

 

[std7mag]

Another vote for Strelok Pro.

 

[dunraven]

curious how you got out to 500 without one.

 

[moondog]

I am currently using a Kestral, any of the mentioned ballistic apps will get you there though. Once I get my initial velocity, I correct it up or down based on Impacts at distance, Reverse engineering so to speak. I don't use the chronograph after that.. As the bullet goes trans sonic, I adjust the bc.
It gets tricky at long distance in any wind. You can have repeatable dope at say 1200 yards and beyond, flip around 180 degrees and be way off. Inputting correct environments is key at distance.

 

[Benchrest Braxton]

What projectile are you using? I will send you some good info over

 

[6.5 forever]

I use StrelokPro and it’s pretty accurate. It’s a phone app

Everything you need is here.

 

[Mr Wick]

curious how you got out to 500 without one.















There was a guy at the range with a high powered spotting scope that I asked to spot me.

 

[Mr Wick]

Strelok seems to have everything I need. Thank you to everyone.

 

[David Milisock]

Having found my optimum load I am shooting exceptionally well at 500 yards. It's time to see how far I can take it. However, I do not have a spotter and have no reference chart that tells me how many MOA clicks to turn when increasing distance. Say 500 to 600 yards.

Do such charts exist or are there other ways of figuring it out.

As always.

Thanks.

Are you target shooting or hunting? First rule PRACTICE! These ballistic calculators are readily available on line HOWEVER, while they're OK, take all of them including the phone apps with more than a grain of salt.

 

[HandgunHTR]

Lots of good advice on which programs will give you good data, however the question that I have is:

Do you own a chronograph? If not, those programs won't help you that much as one of the main inputs for them is the muzzle velocity of the load you are using.

Now, there are ways to "back into" your MV, but it is so much easier if you can just measure your MV with a chronograph.

 

[alf]

I always use JBM, confirm at distance, & make a copy for the gun:

 

[David Milisock]

I know this is going to get me in hot water but after reading this I checked with several different web sites, JBM, Hornady and Caldwell to name 3 brand names and all and I mean each and everyone when given the exact same input data and in some cases bullet data from their selected drop downs gave me SIGNIFICANTLY DIFFERENT results.

So the questions are, do others get varied results from various applications with identical inputs values? If so why in God's name would I use these?