Long Range 101 Part 76 - G1 vs G7 Drag Functions & Ballistic Coefficients

[@supercomp7078]

Best explanation yet on KZbin, it was driving me nuts on how you could a better bullet with a lower published BC

[@ShawnScaggs]

Dude, you have the most informative channel on KZbin for long range shooting! Love it keep up the great work!

[@kevinhartley7788]

Hi Rex, I'm a relative beginner at long range shooting and have found your Sniper 101 series to be extremely educational! Thank you so much for the information. You have my utmost admiration and respect! Hopefully, I will soon be in a position to occasionally donate some small financial contributions to your cause, here and there. I truly appreciate the enormous amount of work that you have put into educating the rest of us. I have done just enough long range shooting (up to 1,200 yards with 175gr 308 win) to know that you are for real and that you can "walk the walk" as well as talk the talk! :-) Not wanting to miss anything, I went back and started from the beginning of your series and reviewed each episode. I noticed that in part 32 you were explaining the co-sin function as it pertains to the winds effect on trajectory at extreme ranges. I've never attended college and am unfamiliar with trigonometry but, years ago I accidently discovered how the co-sin function works in real-life and found an extremely easy way to explain it. I would love to discuss this with you. I believe that it would you help explain to your viewers that haven't been exposed to higher math, some of your formulas and make it easier for most people to understand at least that part of it. If you would care to talk, please contact me anytime, day or night, at [phone]. Thanks once again. You are incredible! Kevin

[@willnonya9438]

I really like how you explain things. You break it down into an easy way to understand without sacrificing too much technicality.

[@Rubicon1776]

Finally, Sniper 101 is back! Can't wait to get to the calc forms! I've been waiting for the calc forms since the beginning.

[@vincef5832]

Hoping to see a series of printed(hard cover) books for the Sniper 101 course. It would be a fantastic addition to any shooters library.

[@nicholasscholten4838]

I sent this video to another channel with three dudes trying to explain this without any charts. This explains it very well. Wikipedia has a guy that indicated the G-1 drag coefficient is (G1 drag coefficient = 0.5190793992194678)

[@arnaudn.5675]

My left ear enjoyed this video more

[@lindazhou4118]

Nearly thought my right earphone is broken before I saw this comment >

[@rolfgartmann975]

Thank you very, very much for all the videos you've made. They are very good and show the best practice how to gain knowlege about long range shooting. No other "tutorial" is comparable to this! Good Job. BR from Switzerland

[@robwebster3063]

I agree, good info as always. But I have to say, shooting a stuffed animal out of a cannon.....nice touch, too funny. Glad to see Sniper 101 is still coming out. Can't wait until the next video.

[@AllanSegalMD]

Keep em coming, Rex. Great series.

[@jessicapieper8830]

Another great video Rex! By the way, Bryan Litz's book "Applied Ballistics for Long-Range Shooting" is a good source for G7 BC ballistic data.

[@jordandavis1991]

Congrats, you are the first chanel i have ever subscribed too! love your videos, thank you!

[@simonwiltshire7089]

Great stuff!!!! Interestingly changing to G7 from G1 in my ballistic app for my 77smk's gives vastly different answers. The nearest by a mile is G1.

[@nisholger8262]

3:27 the formula should be c = W I / D^2 . Divide through square of diameter instead of multiplying with it.

[@imeprezime1285]

It's not just typo in the video but also in the description of it. While his videos on ELR shooting are generally good, I noticed some old and incorrect myths are propagated in them. For instance, he suggests that most of the riffle bullets become unstable due to effects of transonic zone. Most actually aren't!

[@chrisjames7489]

I think it’s important to remember how much the Internet has made information like this available more and more. This video series is a decade old and he does get most things correct. It was really hard to get facts straight back then and he did an overwhelmingly good job considering how much information he covered. It’s obvious he took the time to read tons of field manuals and published data rather than regurgitating somebody else’s info from a video. I would be totally down for him updating/remaking the series.

[@erklaerbaer01]

hellz to the yes, finally a new episode!!! LOVE IT!

[@thecheapshot1065]

8 years later and this is still the definitive video series for those of us who want one shot one kill extreme long range

[@hawaiivolcanosquad3322]

I really really really like this channel !

[@LilChantilly]

It is one of my very favorites too! So educational!

[@jerrymont2595]

Fantastic Rex !

[@MB-kh2gu]

Thanks a bunch for explaining exactly what I needed to know. Your presentation was very understandable for those folks such as myself that are a bit math challenged. Anyhow, I was after a good explanation of drag function and which would be the best to use in my long range calculations. You did a great job....Thanks dude, I am going to subscribe to your channel for sure:)

[@jasonford6317]

Very interesting topic here. You should do a focussed segment or video on Saami Specs to distill all the technical infirmation there. It's a lot but worthwhile ad part of your comprehensive tutorial which is excellent. Maybe it could explore how to read and interpret and apply all that information. I would bet you could make it interesting and digestible.

[@TheCousinDan]

29:55 awesome footage of the projectile

[@TiborasaurusRex]

Our Training Schedule: www.rexdefense.com

[@PreparingForSHTF]

I don't know about everyone else but I can't wait to download the CalcForms and get to work with them.

[@mountainman78629ify]

We deal with this in my line of work. we used a conversion factor to convert gross barrels of petroleum products to net barrels and as far as weight goes being 1 of the factors, water is our standard of 1 API, weighing 8.34 pounds per gallon. Gasoline has a higher API of about 59-60 and weighs about 6.25 pounds per gallon. Obviously the lower the number, the heavier the product meaning we haul less amount in barrels to get the same draft in the barges. negative 12 was really heavy. its like using someones foot as a standard. it doesnt matter how big it is, its just gonna be a starting point

[@dxdx666]

Where did you find this graph from 9:47 ? How did they determine drag coefficients in real flight for velocities as low as 200-300 ft/s when real bullets never flight so slow. Did they fired it at subsonic muzzle velocities and track with radar or what? Thanks for the answer!

[@deepakgupta9856]

Hello Rex. Just a quick question: since you say that the greater the BC (a ratio), the better, and since it is a fraction, this implies that the reference projectile is superior to all these bullets? Is that correct? Regards,

[@dhbroussard89]

So the Form factor is best guess voodoo...that is pretty accurate...i can live with that mathematically....

[@DanaWebb2017]

I was wondering if there is a table like in the sierra's 4th edition page 660 reloading manual of the G1 drag function for the G7 drag function were you can get values of the drag for the test bullet.

[@TTGLL]

I knew the g7 was a more accurate representation of today's rifle bullets. But thanks for the math class. I digg learning the basis for the formulas so that when applied or compared to the empirical data l get a more accurate representation of the results I can expect before going out in the field. I can't imagine trying to work up a drag function for a stuffed animal all those shapes and how it would be deformed do to the changes in pressure. I know this, it would be a ballistic pig and being low density it would lose energy quick. Terminal ballistics would be negligible. LOL

[@TiborasaurusRex]

The asymmetrical profile of stuffed pigs, rabbits and bears require a very strong twist to achieve static stability. The stuffed animals with the best external ballistic performance are the stuffed whales and sharks - the tails moves the center of pressure rearward and helps to stabilize their flight considerably... the challenge is keeping them together at supersonic velocities. Premature fragmentation is an issue.

[@TTGLL]

Fin stabilized, plush projectiles. Once again Rex showing us the way to go.

[@expertmarksman16]

TiborasaurusRex LMFAO

[@pepelapiu2004]

TiborasaurusRex I find this comment rather offensive and racist to stuffed bears everywhere.

[@johnlee4249]

Lock & Load and fire for effect on the sharks, save the whales.

[@jacobarnard777]

LOVE your vids. THANK YOU

[@randyeggleston7332]

What's a better choice, the Kestrel Applied Ballistics or the Horus?

[@cottojn]

So what is the difference between G5 (7.5 degree short boat tail) and G7 (VLD, 7.5 degree long boat tail)? I Sierra Gameking and I cant find the G Function information for the bullet. I do know that it is a Boat tail bullet.

[@pcombs70]

thank you thank you thank you.

[@theclaymore5150]

Good stuff as always!

[@rayknickerbocker8142]

These AP projectiles you keep showing.. where to you get them?

[@cody182005]

Great video. Enjoy watching your series. What does it mean in my ballistic program when the G7 value is displayed as "Litz" instead of a number? This comes up in the program ISNIPE when i look at .308 berger 168 gr target hybrids. Program still seems to calculate accurate data just wondering what this means. Thanks

[@TiborasaurusRex]

Bryan Litz independently verified and refined many of the published BCs in his research... He also work determining G7 values for many bullets. I am guessing the program you are using is simply inputting Litz's BC data.

[@carpmaster87]

Also if you are using the JBM Ballistics calculators or tables the projectiles labeled (blitz) are from his data/book I believe.

[@coady-wp3xf]

at 17:35 the top pic looks like a poké ball... dose this mean its the best bullet for shooting Pokémon ?

[@slipknnnot]

What happened to the real G6 ?

[@Muddlol]

Sweet!

[@Bouzoukiellas]

What is the name of this badass American song?

[@Mrpike69]

yay HD!

[@anthonylandino7709]

Blah blah blah blah

[@tarasb.ukrainian1947]

thumbs down for mono audio...

[@u_watch9497]

is your shooting range in the dakotas? i saw the dirt and was wondering.