Precision rifle FAQ- how to true your ballistic coefficient (BC)

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  • Опубликовано: 2 дек 2024

Комментарии • 217

  • @berteisenbraun7415
    @berteisenbraun7415 Год назад +53

    Best long range shooting channel on the Web! YES I DO BELIEVE IT!

  • @ebosspt
    @ebosspt Год назад +22

    Your story telling is as consistent as your shooting. You've managed expectations and deliver on target again and again. Nice work.

  • @mitchh931
    @mitchh931 9 месяцев назад +6

    Retired Army veteran here, I've learned more about marksmanship from you than I did during the entirety of my military service. I truly appreciate the incredible attention to detail and thorough explanation you provide.

  • @charlesmckinley29
    @charlesmckinley29 Год назад +4

    Thank you for not only explaining what you did but WHY you did it. Then you proved it worked.

  • @RebaDerChi
    @RebaDerChi Год назад +8

    you remind me of a young Alan Jackson. good stuff!

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +6

      Man this is great! Interesting fact about me…. Like Alan I also grew up on the chattahoochee

  • @akhomer
    @akhomer Год назад +6

    These videos are clear, concise, and accurate. The format is great and the editing is spot on. I have a feeling the channel will continue to grow!

  • @realsavour
    @realsavour Год назад +9

    Hey man - great videos. BCs changes based on your bullet, but also depending on many other factors. You NEED to watch the Hornady podcasts about 4DOF and Zero Angle.

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +5

      100% will check this out…. First I’ve heard of it so can’t wait to see what else I can learn!

    • @Ared1lb1535
      @Ared1lb1535 Год назад

      ​@MountainsMulletsMerica I would LOVE to see you try 4DOF! The podcast explanation made it sound very interesting to me. I highly recommend giving it a look!

    • @realsavour
      @realsavour 10 месяцев назад

      @@MountainsMulletsMerica Would love to know how you're doing on this! Let me know.

  • @TheMP45
    @TheMP45 29 дней назад

    I have been building a budget long range rifle that started its life as a used Christensen Arms Mesa in 6.5 creedmoor. I just recently found a range in my area that I can get out to a mile. I haven’t shot past 200yds and look forward to getting into LR. Your channel has been a huge help in learning how to prepare for my first attempts at LR. Between your channel and Ryan Cleckner’s channel, I feel confident in the knowledge I’ve received from you both to develop good dope and be able to reach my goals. Look forward to more of your content.

  • @nicinterlagos4515
    @nicinterlagos4515 Год назад +1

    Excellent instructional video. You are crushing it. Never an unnecessary word or unsubstantiated opinions. Great work earning your success. Keep at it.

  • @Mike750200
    @Mike750200 Год назад +3

    Two and a half mils wind (with an amazing BC) at 1200 yards and making it look easy. Wonderful content. Thanks sir

  • @alangriffith5823
    @alangriffith5823 Год назад +3

    Great video! One thing which is majorly wrong. At time 8:36, you enter 15.0 for "Velocity Variation". Your entry will change your MV 15 fps with every 1 deg F up or down. Example, reduce your shooting temperature 10 deg F from your Zero temperature and your MV will output 150 fps slower. This number, for factory ammo needs to be determined by shooting a sufficient size string at both your zero temp and then later at a higher or lower temp. For reloaders you can enter a fairly close Vel Variation based upon the powder you use. Example. Varget = .19 fps/1 deg. A great temp insensitive powder. A great powder which IS temp sensitive is Rel 15 = 1.52 fps/deg. These "estimations" can be found by Googling "powder temperature sensitivity chart". Other than this, great video!

    • @TheBeefSlayer
      @TheBeefSlayer 2 месяца назад +1

      Just do what I do and keep your ammo in your shirt pocket inside your jacket in the winter for long range shots. 👍

  • @MitchRapp01
    @MitchRapp01 19 часов назад

    Dude, your videos are fantastic. New to long range shooting here, just picked up an Aero Solus in 6 creed, trying to learn as much as possible. Every video I’ve watched of yours, this one chief among them, is organized, well thought out, easy to understand, and you give examples via your scope cam. Love it. I’ve watched vids from professional shooters that don’t even come close to explaining this topic as well as you have. Keep it up!

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  8 часов назад

      Really appreciate you taking the time to stop by and check out the channel! Lots of new content coming so hope you’ll stay tuned to check it out as well!

  • @nilescoyote4829
    @nilescoyote4829 Год назад +6

    Great informative video on trueing BC based solvers. Have you tried using any of the solvers that use the specific bullet your using and doppler radar derived drag curves like Hornady 4Dof or Applied Ballistics PDM's and CDM's? If you haven't I think you'd like what you find.
    A great explanation of what Hornady 4Dof is and how profiles are built can be found both on youtube and their podcast on pobbean and Spotify is episode #49 "why use 4Dof"
    The accuracy of the above two solvers compared to solvers that use a BC value from a G1 or G7 standard model is quite an amazing leap forward. I've been using them for the past 6-7 years in PRS competition and we wouldn't be scoring where we do today if we didn't have 4Dof and AB.

  • @christianlarson6708
    @christianlarson6708 Год назад +4

    Taking me to school!! I love it! Great knowledge delivered very well and easy to understand/follow. Thanks for your efforts!

  • @GH02T406
    @GH02T406 Год назад

    The zero wind noise in his mic with the wind blowing hard is impressive.

  • @RetiredFE
    @RetiredFE 15 дней назад

    Outstanding video. Very clear and concise information on how this procedure is done. Much appreciated from a new long range shooter. Thanks

  • @veracitysolutionsllc
    @veracitysolutionsllc Год назад +5

    Good video. I would add that people should be aware of truing in wind and aerodynamic jump. At those distances it doesn’t take much wind to affect elevation and one could be truing off bad data that could be significantly off on another day.

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +2

      Great point and I’m annoyed with myself that I didn’t think to mention this in the video. While the wind doesn’t change the theory or the process, like you say it could slightly change down range performance so always best to do something like this in as little wind as possible

    • @veracitysolutionsllc
      @veracitysolutionsllc Год назад +1

      @@MountainsMulletsMerica definitely a solid video. I wouldn’t worry too much about it. I’d hope those interested enough in long range would have an understanding of AJ soon enough and a little sense to know zeroing or truing in bad conditions can cause issue.

  • @michaelcall1857
    @michaelcall1857 Год назад +2

    Excellent video! IMO, instructional content is the most interesting.

  • @longshooter457
    @longshooter457 2 месяца назад

    Thank you. Needed info on just how to adjust the bc and could not find any info until I found this video. You explain things so even a idiot like me can understand.

  • @jonathannelson33
    @jonathannelson33 2 месяца назад

    This video just made me subscribe. No one ever explains truing the bc. Hope to learn some more long range shooting tips from the channel.

  • @simonjohnborg
    @simonjohnborg Год назад +3

    Best and most precise description I’ve ever come across. Well done. Impressive results from a 16” barrel. I would love to see a video made on the same easy step-by-step method shown here, on how to program a Kestrel 5700 Elite. Keep up the good work.

  • @papaw7347
    @papaw7347 3 месяца назад

    You’re absolutely amazing the way you setup your videos. Awesome work, thank you for teaching me this. Just started in long range and just got everything together and gathering as much information before sending rounds down range. Again thank you

  • @Matt-dd3cw
    @Matt-dd3cw Год назад

    This guy brings the goods, best long range shooting content on the internet

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +1

      Really cool to hear you’re enjoying my content! Lots more just like this on the way so hope you’ll stick around.

  • @johnoldman5877
    @johnoldman5877 Год назад +2

    Great tutorial!
    If you're going to shoot at distance, you absolutely need a chronograph. You can't just go by the velocity number on the box as that will not be the actual number from your rifle. The AMU also uses 10 rounds or more when collecting velocity data. I like to use a 10 round sample. I use a Labradar and Applied Ballistics. The calculators are very much garbage in - garbage out, so make sure your inputs are accurate. It will save you ammunition and time.

  • @coltcomphbar
    @coltcomphbar Год назад

    Currently my favorite channel to watch. By far.

  • @theboatshoptb
    @theboatshoptb Год назад

    Thankful you have started to create more content.
    You make everything easy to understand for those of us trying to understand the fundamentals of long range target shooting!
    Thanks for taking the time to share your knowledge!!

  • @MSHunts
    @MSHunts 6 месяцев назад +1

    Great video, keep it up!

  • @NoMatureContent
    @NoMatureContent Год назад

    I appreciate the effort you've taken to edit in the camera angles. Thats no joke.

  • @randalljeffs7272
    @randalljeffs7272 Год назад

    Best long range channel on YT

  • @ledeni012
    @ledeni012 Год назад

    Well done, dear colleague! I will recommend this video to all my LR friends as the most informative guide - how to check BC! Well done!

  • @stevedavis5349
    @stevedavis5349 Год назад +1

    Just what I needed! Thank you!

  • @jimlerum
    @jimlerum Год назад +1

    Nice job. Very informative video. You’re giving a lot of shooters new horizons.

  • @Samc6127
    @Samc6127 Год назад

    I’m just now getting into ballistic calculations, and this really helps. I’ve heard my friends talk about trueing, but haven’t had it explained to me.

  • @grantjamrock3812
    @grantjamrock3812 Год назад

    Best all around channel!

  • @annexpaint
    @annexpaint 3 месяца назад

    Just found your video from another video and I love it. now I've got to get out and shoot.Thanks for sharing

  • @billcarlson852
    @billcarlson852 Месяц назад +1

    Your a great educator 😊😊😊😊😊😊

  • @kevintowell415
    @kevintowell415 Год назад

    Terrific BC lesson, I have learned a lot!

  • @westtexas3041
    @westtexas3041 Год назад +1

    Thank you for the outstanding video. I will define trying this soon.

  • @jbsack
    @jbsack 9 месяцев назад

    Best long range shooting video on the web. Thank you

  • @joshgoetz8879
    @joshgoetz8879 Год назад +1

    Great info, would love to see some content on cant impacts and high angle shooting as well!

  • @jorgerodriguez-wv4ul
    @jorgerodriguez-wv4ul Год назад

    I live in camifornia. I don't even shoot or hunt.. I found ur video really informative and interesting.

  • @mattthompson83
    @mattthompson83 Год назад

    Best explanation I've seen on trueing out a rifle, thanks!

  • @GTMGunTotinMinnesotan
    @GTMGunTotinMinnesotan 9 месяцев назад

    I love that the wind was 1 Milllion miles per hour haha. Great content and explanation.

  • @shaneciccarelli-palmer2962
    @shaneciccarelli-palmer2962 Год назад

    Idek I did not know about this topic, thank you for introducing this valuable branch is shooting to me!

  • @Runningmancs
    @Runningmancs Год назад

    Great video! Getting into precision style shooting myself truing my app data has been a game changer.

  • @rpurdum
    @rpurdum 5 месяцев назад

    Very clear and concise instructions. Thanks for the hard work!

  • @What___1931
    @What___1931 Год назад

    Another helpful video. We should start calling you professor!

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад

      Haha let’s not get carried away. Really cool to hear you’re finding value in watching!

  • @stephendebord9953
    @stephendebord9953 10 месяцев назад

    Great video, great rifle. This is the sort of thing that has pulled me into wanting to shoot well.

  • @daviddegeorge1665
    @daviddegeorge1665 Месяц назад

    Thank you ! I’ve been trying to figure out trueing my ammo and nothing out there explained it as well or as simply as you did . Thanks

  • @davephilpott4543
    @davephilpott4543 Год назад

    Thank you for this video. Many people would consider it "too complicated" to mess with BC, but as we can see the app makes it simple and it really pays off. For those folks without a chrono, it would be great to find out your comments on best estimates on fps adjustments, based on what you see.

  • @timsmith5837
    @timsmith5837 Месяц назад

    Outstanding presentation

  • @sgav8r
    @sgav8r 3 месяца назад

    Excellent information. Top notch all the way. Thanks for these videos.

  • @leroybarnhill3495
    @leroybarnhill3495 Год назад +1

    Love this channel!

  • @brianstillion2062
    @brianstillion2062 Год назад

    Best channel ever.

  • @TheBeefSlayer
    @TheBeefSlayer 2 месяца назад

    Wow…. With a 16” barrel. Amazing.

  • @kellbob4726
    @kellbob4726 Год назад

    Very Practical your a good instructor I learn tips on all your updates. Thanks

  • @u4ia4040
    @u4ia4040 Год назад

    Very good explanation , i think this is applicable on every Balistic calculator . i use this feature on strelok , the devil is in the details and i myself was not aware about the 1400 fps speed range where BC really starts to count .
    as always great Video and greetings from Belgium

  • @gregoryjackson6166
    @gregoryjackson6166 9 месяцев назад

    Great job! Your video confirmed that I was on the right track. Thank you! G.Jackson, MSGT/USMC, Ret.

  • @webanon
    @webanon 7 месяцев назад

    Nice work as always. That microphone is great in those Palose winds too.

  • @billcarlson852
    @billcarlson852 Месяц назад

    What I saw is EXELENT TUTORIAL. AND
    HORNADY PINNOCIO MARKETING SCHEME😊😊😊😊😊

  • @DoubleGrape944
    @DoubleGrape944 Год назад

    Hornady is notorious for inflating their BC numbers so the adjustment that you had to make checks out for sure.

  • @tonyrebo9862
    @tonyrebo9862 Год назад

    Very concise and helpful content as usual! My 6.5 CM will be a happier with my trigger work :)

  • @taylorpestana1809
    @taylorpestana1809 Год назад

    Cool note from Geoballistics. There is a trueing setting that makes life easy. just input the trueing distance and bam. done.

  • @Capt4Edwards
    @Capt4Edwards Год назад

    Love the content! I'm new into long range shooting and the way you broke this down made it very easy to understand!

  • @GetMeThere1
    @GetMeThere1 Год назад +1

    I would have enjoyed seeing both charts (with each of the BCs) side by side, to see holdovers at all ranges -- including the differences at shorter ranges.

  • @JeremyElliott
    @JeremyElliott 9 месяцев назад

    Maybe this is a generational thing, but as I watch your videos, I have to keep fighting back a bit of surprise that I am being taught so much about long distance marksmanship by Richie Cunningham.😊
    Seriously, I love these videos. Good work!

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  9 месяцев назад

      Haha this is great! I’m embarrassed to say I had to look up Richie Cunningham when folks first started making this type of comment 😳😳

  • @ES-so5oc
    @ES-so5oc Год назад

    Dude you videos are top notch! Rock on!

  • @calangel
    @calangel Год назад

    I use two chronographs: a barrel mounted MagnetoSpeed and a tripod mounted light based or radar based chrono placed at a laser range finder verified distance. Record all weather conditions. Record near and far velocities. Use JBM ballistic's calculator and derive a BC.
    I've verified the BC of Hornady's 75gr ELD-M with this method. G1 .460 vs Hornady's advertised G1.467, which is within statistical variation of one gun to the next.

  • @spartan7.628
    @spartan7.628 Год назад +1

    Hey, love the video, BUT recheck that fps variation setting you set to 15. You told the app that that setting for the ammo is 15fps per DEGREE. That's not velocity variation from the chrono but velocity variation per degree of outside temperature!

  • @jaredandrews379
    @jaredandrews379 11 месяцев назад

    Definitely helped me out! Thanks for posting!

  • @brianqually2212
    @brianqually2212 11 месяцев назад

    Thanks for the demonstration 👍👍

  • @firstimeshooter6590
    @firstimeshooter6590 Год назад

    Ima go and save this video. Very informative.

  • @austinjones9970
    @austinjones9970 Год назад

    Great explanation. Thank you

  • @LavaLemming
    @LavaLemming Год назад

    Thank you for the master class sir!

  • @paulcox4692
    @paulcox4692 2 месяца назад

    Great video!! I would be interested to hear your take on the subject of barrel heating.

  • @EagleEyeShooting
    @EagleEyeShooting Год назад +11

    Presented very well and dig the target footage. Few things I would like to share as a fellow long range shooter.
    Scope height over bore plays little effect to calculated adjustments. At best, it will interpulate about a tenth. MDT did a video on this also.
    The first step one must do before relying on ballistic data is to do a tall target test up to your longest target engagement. Ensure your at 100m to see if any scope tracking error is shown. The EP5 is a great scope, but I personally have found a few tenths error past 12 mil on multiple scopes. Kestrel has this compensation as Zero offset.
    Adjusting BC as shown here will true up the distance your shooting at, however, this does not compensate correctly for your particular rifles and load trajectory. What will happen is distances half the range and closer will have shots impact above the target.
    It is essential to test at all effective distances.
    Ballistic solvers like the one shown here will get you close but unfortunately lack the ability to adjust to your rifle and load trajectory. It will get you close, but ultimately you will have to build a D.O.P.E chart with matching DA's
    Ultimately, this is where a Kestrel is an essential tool with its ability to Cal (MV) at the distance your rifle and load hits transonic. (Must be within 10% of distance). The Kestrel will replot the trajectory to better match your rifle and load. BC adjustments should only be done when you can interpulate exact velocities at targets with muzzle velocity

  • @recklessjunkie
    @recklessjunkie Год назад

    I think I have the same Sunwayphoto tripod. I love it.

  • @danulman8837
    @danulman8837 Год назад

    Great job at presenting excellent information in an easy to follow manner. I enjoyed watching and verifying all of the things I’ve done truing my long range data. I also use Shooter and really enjoy it and find the windage portion of the software to be very user friendly and accurate when computing drift.

  • @Hav_Nfun
    @Hav_Nfun Год назад

    Very helpful and well explained, thank you for the great content 🇺🇸

  • @MagnumMuscle1000
    @MagnumMuscle1000 Год назад +1

    Before adjusting B.C. you must make sure you have the environmental conditions entered correctly (density altitude and temperature) as well as scope height and shooting angle.

  • @RockDog101
    @RockDog101 Год назад

    Great video. Living in a suburb of NYC, the longest target range that I have access to is only 300 yards. But when I move to a free state, I hope to stretch my Bergara out to 1,000+. Either way, very engaging content.

  • @willo7734
    @willo7734 Год назад

    great info! Thanks for putting together quality content as always.

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +1

      Appreciate the continued support! I’m trying to grow this channel so I’ve got a ton of new videos in the works. Hope you’ll stay tuned!

  • @CplMAC1144
    @CplMAC1144 4 месяца назад

    Awesome video!

  • @greatdane3343
    @greatdane3343 Год назад

    Awesome video and fantastic shooting mate! 👍 👍
    I love the instructional content backed up with a practical (and skillful) demonstration.
    Hopefully someone will sponsor you for a shooting mat so you and your rifles dont have to keep rolling around in the dirt! 😆
    Keep it up mate. Great stuff!

  • @mr_mongo7228
    @mr_mongo7228 Год назад

    Very educational thank you for sharing!

  • @juanherrera2672
    @juanherrera2672 7 месяцев назад

    Easy pease. Good video

  • @Persuasian338
    @Persuasian338 Год назад +4

    Does a mount with a built in MOA (30 moa base in my case) affect height over bore? Chamber vs muzzle height? Or any idea how that affects bullet flight path when it comes to close and far zeroes?

    • @21psd
      @21psd Год назад +1

      This is a good question. I wondered the same, exactly where to measure sight over bore using that base. I would think at the muzzle is best but how would someone calculate this?

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +4

      This is a great question and not something I’ve ever thought about…. My initial opinion is it likely doesn’t make a difference but I don’t have any hard data to base that opinion on. That’s one of those things to me that’s a lot of time and energy to think about and likely won’t make a noticeable difference in downrange performance

    • @GB-zi6qr
      @GB-zi6qr Год назад +1

      If I may add to this discussion. I'm running a 6.5 Grendel with a level scope mount. With 123 ELD-M's and a 200yrd 0, I'm getting just under 2" high at 100yrds. MV is 2470 per Magneeto Speed.
      Would a 20 MOA base change that?
      I'm wanting to use this for my general purpose all around rifle.
      Seriously thinking about building a CM for long range fun.

  • @blackout9814
    @blackout9814 Год назад

    I appreciated the explanation on how and why to true the BC in shooter app. Until now I only adjusted the MV to "true" the app

  • @ut_punkn1859
    @ut_punkn1859 Год назад

    Great information

  • @jacoklopper4772
    @jacoklopper4772 Месяц назад

    This was valuable thank you Sir

  • @desertdwellers7294
    @desertdwellers7294 Год назад +1

    I found this interesting. I would have thought that the BC the manufacturors give would be exact but I have problems with my BC calc. at longer ranges and have adjusted the muzzle velocity to compensate. But it doesn't help when the distance changes. So I'm going to try this. Hopefully it works.

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +1

      The bc provided by the bullet manufacturer is very close and directionally correct but there are many factors that influence the exact bc for your specific setup. You’ll have decent results running the bc provided by the bullet manufacturer but if you really want to improve your performance you need to true as shown in this video. Can’t wait to hear about your results when you get your rig trued up.

    • @desertdwellers7294
      @desertdwellers7294 Год назад +1

      @@MountainsMulletsMerica, thanks for the info. I'll let you know next time I get out long range.

  • @jasonrad9332
    @jasonrad9332 Год назад

    Good stuff!👍🏻👍🏻

  • @danecker6108
    @danecker6108 Год назад

    So helpful! Thanks man

  • @shamusarms5476
    @shamusarms5476 Год назад

    Great video as always!

  • @scottupatree3356
    @scottupatree3356 5 месяцев назад

    Good info !

  • @darinmislow9022
    @darinmislow9022 Год назад

    Really great video, thank for sharing your knowledge and know how.!!

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад

      Appreciate you taking the time to watch! Really cool to hear you enjoyed this one

  • @benjaminbrown1179
    @benjaminbrown1179 Год назад

    Great vid!

  • @Quality_Guru
    @Quality_Guru Год назад +1

    I’m not a PRS shooter, but I’m enjoying watching your channel. I struggle to get a precise grouping on my AR rifle, primarily because of how I have the rifle stabilized at an indoor range. Which Arca Rail and Ball head would you recommend to ensure my rifle is locked on tight? I already have a sturdy inexpensive tripod.

    • @GB-zi6qr
      @GB-zi6qr Год назад +1

      If I may, a few things I've done to my "Entry Level" AR.
      1) Tighten up the interface between the lower and upper receivers.
      I used small pieces of crating tape.
      2) install a free float hand guard.
      This sounds more simple than it is.
      I did use a mandrel to true the front face of the upper receiver where the barrel extension makes contact.
      For removal and installation of the barrel I also bought the Giessle reaction rod.
      The bad news. After all of this the rifle still only shoots 1.5" groups at 100yrds.
      I did say it's an entry level rifle.
      I did manage to improve the groups by 0.5".
      On another AR rifle with a better quality barrel I'm getting 1" groups.
      This rifle also has a muzzle break, the entry level rifle doesn't.
      Can it be done? Yes. Is it easy? Honestly that depends on your definition of what is easy and difficult.
      Wishing you the best of luck in your endeavors.

    • @Quality_Guru
      @Quality_Guru Год назад +1

      @@GB-zi6qr Thanks for the intel.

  • @diligentefforts8172
    @diligentefforts8172 Год назад

    Best vid out there 👌🎉

    • @MountainsMulletsMerica
      @MountainsMulletsMerica  Год назад +1

      Thank you! This one ended up longer than I had hoped but wanted to make sure I thoroughly covered the topic.

  • @mikecrowley4275
    @mikecrowley4275 Год назад

    Loved it!!!