Trajectory Validation: Calculate True Muzzle Velocity

Mike shows you how to use the ballistic calculator at www.gseven.com and data gathered at the range to determine a true corrected muzzle velocity for your rifle.

[@muzzstopinfo5578]

You showed it so clearly and carefully it made it so easy for me to follow, thank you from downunder Australia. excellent teaching, impressive

[@gilream]

Great video here Mr. Davidson. I appreciate it. Your shooting system makes me drool!

[@W6RIPRadioAdventures]

I just used this last week. It worked spot on. I was shooting a .223 and zeroed at 100 yards. I worked up to 200 then 300 then 400 then 500 and finally 600. I was stoked. It seemed almost too easy. The wind was shifting 6 to 12 so I wasn't able to test the wind calculation but drop chart worked great. The calculations are only as real as the data you input. Make sure its correct or at least super close to it. I gave a plug in one of my videos.

[@ronroy4133]

Very helpful vid guys, many thanks!!!!

[@billhanson827]

This tool you have is perfect and exactly what I was looking for bullet drop validation. Excellent. From here, I can figure out the other ballistic values on my own (spin drift, coriolis effect, earth's rotation drop/rise, etc.). Thank you!!!

[@robertstarling300]

Just signed up for L1 & L2 courses in August. Looking forward to learning with you folks. Also just ordered the G7 BR2 from Kregg this week. I assume that even with a chrono you'd still validate loads and trajectories?

[@aarondavidson2156]

Our ballistic calculator shown here can work with G7 BCs as well.

[@cwoodside907]

In ballistic computers, you should always use the G7 standard when referencing a BC for long range shooting. Particularly with a VLD or a HPBT bullet.

[@MiNeYoursChannel]

At the end do you not need to change the temperature to 80 before you print, as that's the temp you did the validation for? or just leave it at 50? Can't work out if I'm been slow here?? Cheers anyway for the video.

[@TacticalAR15Master]

I've been using G7 Ballistics for about 3 years now. I've never had to use any other.

[@ThrottleJunkie]

I'd like to see this done with G7 BCs. The G1 drag model was created to match the profile of handgun projectiles which are much less aerodynamic. The updated G7 model matches the streamlined design of modern centerfire rifle projectiles and has been proven to yield more accurate data. Not saying your data isn't valid, but G7 has become the standard. Also to viewers, beware mfrs stated BC. For them it's a selling point so it's often embellished and fluffed.

[@jasongerbrandt5344]

I'm using this app for my 7mm rem mag begara using 168 bergers and app is deadly accurate.

[@alanmaughan7968]

How do you know that your BC is correct? The difference in drop data could be caused by a difference in BC rather than MV - lots of published BC data is incorrect, especially that provided by Hornady for example.

[@talal9038]

after you got the corrected muzzle velocity why did you stopped!! you should make a test again with your rifle.

[@dhpope2004]

That is a nice rifle stock; can you provide some information on it?

[@CYOTsNiper]

What if you don't an accurate Chronographed starting velocity but only an estimated one?

[@longshooter457]

I know this is old and is for tuning velocity...at what distance do you start to tune the bc. and how do you do it?

[@stormy7135]

I used this today, worked great at 600 yards. My initial group averaged 1" low at 600 yards. I I tried entering the data for validation but it actually said my velocity is higher than what I had initially entered?? My initial velocity entered was 2727 and it came back and told me my true velocity was 2747? It should be lower than my 2727 correct? What Is going on? THANKS for your help!!!!!

[@sarahconner9433]

Your perfect.... Velocity will+-200 feet per second..1 inch at 600 yards is insane accuracy!!! Your a sniper!! Congratulations!!

[@omarh7779]

No longer available on your website? getting an internal error message.

[@bgp2133]

I only have access to a two hundred yard range, is it even worth trying at this distance? Zero'd at 100, check at 200?

[@changievangie]

I'm plan to use G7 trajectory validation.. I'm zeroed at 100 yard and will be shooting out to 1000 yard. How do I know what yard to shoot it? Do I need to shoot it at two different yard like shown in the video?

[@sarahconner9433]

You need to zero at 300 yd to start. Then use ballistic table to drop chart your 1000.... Your realistically 6 months of education away...

[@icuppu2]

More like 9 years…@@sarahconner9433

[@dgarcia7388]

I have used this calculator in the past with the G7 range finder with great success. However, in the mean time I have gone to an iPad that I want to have in the field to make quick work of the process. However, your website says my device is not compatible. Any sugggestions/ideas to mitigate that? Thanks!

[@HiTechRob]

iPads do not support Flash. The issue is the G7 Ballistic calculator is built with FLash. I, too, wish their G7 Ballistic calculator worked on a mobile device - either iPhone or iPad. However, I use the Ballistic AE app on my iPhone and iPad (app supports both devices) with great success. It just doesn't have the Trajectory validation tool. THe Ballistic AE app also has a Kestrel Link so I can connect it directly to my Link-enabled (Bluetooth) wind meter to feed data in the field directly to the Ballsitc app.

[@sarahconner9433]

D Garcia.. As your list Uncle I have to tell you your panty iPads are FN gay.... Lose that crap in a hurry... Go Android or better yet lose your phone..... Anyway, Take a piece of paper with your bullet ballistic table.. Go into a kinkofedex and copy it smaller.. And then clear tape this onto your rifle stock.. Done...

[@dgarcia7388]

@@sarahconner9433 dude…that comment was from three years ago. Get over it.

[@sarahconner9433]

D Garcia I was helping you....so.... are you a sniper yet??

[@dgarcia7388]

@@sarahconner9433 in fact I am so F off.

[@stevegarnett]

It would be handy in metric

[@CYOTsNiper]

What if you do that at altitude of your range but go put to 5,000 feet when hunting? Sorry if this is a green question but just starting out.

[@anathma]

Your bullet will shoot a bit flatter. Use this method to get an exact muzzle velocity (which won't change) and then before you go hunting, look up the altitude of the place you're going and enter it into the proper field. A new proper drop chart will get generated for you.

[@sarahconner9433]

Keep watching allot of KZbin videos.. That will help you

[@jwoodward1776]

Is this site not available anymore?

[@damhoj]

is this site still available?

[@chace96]

Will this method be as accurate if you Zero at 50 and measure the bullet trajectory at 100 years?

[@anathma]

In theory any ranges will work. The problem is your inherent inaccuracy as a shooter, and measurement accuracy will play a much larger part. If you zero at 50 (which you shouldn't be doing unless we're talking about a .22) then measure at 100, the difference will only be maybe a half inch. So even if your measurements are off by a tenth of an inch it would make a massive difference in your estimated velocity. You really need to do it at more spread out ranges to check it.

[@sarahconner9433]

If your zero at 200 yards your hits will be about 1 inch high at 100... And 1.5 at 50 yards... Just be a man and sight at 200

[@icuppu2]

Not even satellites will travel for “100 years”.

[@darlonsinclair4719]

Links to the calculator?

[@robthorn3910]

Isn't G1 for blunt rounds? Isn't G7 a better fit for modern bullets?

[@HiTechRob]

Yes. G7 standard is more accurate - especially for VLD or LR secant ogive bullets like the Berger VLD or Nosler Accubond LRs.

[@ralphmcleay7335]

does this do metric

[@antoniobabich3583]

You have to just start filling out the info for the round. When you're done, you click save round and name it.

[@kulaodzak]

I need metric unit...

[@sakosniper4433]

Looks like it doesn't exist anymore, right?

[@garret1666]

dang 7mm mag is a strong round

[@sarahconner9433]

A very awesome and affordable bullet!!! For us real people,..

[@AnthonysOutdoors]

You are correcting your impact shift by changing your muzzle velocity when it is clearly evident by the video and impacts on the target that you should be correcting your recoil management. Shooting from a bench at those distances and getting owned by recoil will give you garbage data.