What causes Pellets to Spiral? | AB101 pt. 11: Precession & Nutation

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Published 2020-05-13
Part 11 of the Airgun Ballistics 101 Series takes us through a few hypotheses as to why pellets spiral, eventually landing at an interesting conclusion!

Gregor Kamensek's video:    • Airgun physics - part 1 (why pellets ...  
Precession & Nutation Explained:    • Gyroscopes: Rotation, Precession, and...  
AB101 pt. 10 on transonic airflow:    • Subsonic, Transonic and Supersonic Fl...  

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All Comments (21)
  • @losonsrenoster
    I've been shooting airguns for 51 years, and found that I have shot better groups 40 or 50 years ago than my groups of recent times. During my school years I was the best shot in town with an airgun, but today I can hardly get two out of 5 shots close together. I believed it was due to old age or poorer eyesight, but now I realize the speeds I am shooting at is 50% to 80% higher than with my old Diana and BSA airguns. This video is the best information on the subject that I have ever seen. Thanks.
  • Shoot your slugs fast, shoot your short pellets med, shoot your long pellets slow, watch and learn. Glad Gregor got a mention, saved me doing it. opp's, mentioned him anyway, ah well He is well worth it. thank you Matt, always an education.
  • @philthefluter1
    Just seriously informed, I am an Engineer and so impressed with your grasp of ballistics.
  • @treeassassin
    To think i had stopped watching you because you walked on this series. Then to see what you have been doing for us!!! Wish you tons of luck with element.. Sad a epidemic was needed to get you the time for this. Stay safe Matt!
  • @Tops1212
    I would just like to say thankyou Matt, for making all of your videos and series. I've been recovering from a total left knee replacement surgery since Jsnuary and I've become a huge fan of yours. It's been awesome to watch almost all of your videos of you hunting and showing of your beautiful country with the majestic animals. Thanks again for the videos Matt, you inspired an Army veteran who at the age of 49, is coming to terms with having a major part of my body replaced and I look forward to seeing more of your hunts. Bye from Canada.🇨🇦
  • Couldn't have fathomed all this without this video.. always wondered where my pellets flew with my unregulated airguns . Thank you once again! Love from Nagaland.
  • Matt Dubber is a wealth of information! Like many, he was my inspiration to become a YouTube content provider! Keep up the good work!
  • Nice job Matt. The airgun community, (especially FX) is grateful for all of your work and dedication. And to think it all started with a fun, successful hunting outing when you were a boy.
  • @johnharvey892
    A awesome video Matt. I would like to share this info with you. I have a HATSAN carnivore in 35 caliber. I started using the h& n grizzly slugs and they were great out to 50 yards. At 75 yards a group was non existent. I switched to some jsb pellets and at a hundred yards it was a tack driver. The jsb pellets were traveling around nine hundred feet per second. The h&n slugs were traveling around 824 feet per second. That to me was a big difference with only one grain difference in the weight of the ammo. The h& n grizzlies were 82 grains. The jsb pellets were 81 grains. I decided to push both ball through the barrel. I noticed the jsb had light twist rate on the skirt. The h&n slugs had heavy deep rifling marks around the slug. I put the inaccuracy down to the fact... That the h&n slug was too big for my barrel. Ballistically it's still didn't explain to me why it was spot-on at 50 yards but at 75 yards it opened up to a 12 inch group. This information is not recent. This information is 5 years old. I realize things are a little bit different now and air gunning has come a long way and things are becoming more compatible... but I believe this is still useful information for those that seek knowledge. The one thing that has always intrigued me and also frustrated me is the amount of variables when it comes to the shooting sport. I was strictly a powder burning guy before I became an air Gunner... But learning about air rifles has been such an education and completely help me be a better Marksman all the way around.
  • @munkytaint666
    i LOVE this entire series, Thanks Matt!! each episode is so rich with information, i find that i have to watch each one several times to let all that sweet information soak into my brain... which i don't mind at all!! ;)
  • A friend and I were having a discussion about the phenomenon just yesterday. Thanks Matt, useful info.
  • @donhunley7359
    great info matt! delving into the "why" pellets spiral is a worthy subject. good hunting!
  • I love these videos. Like this is better than any sort of tv. The content and quality is incredible. Nice work.
  • @timonlamprey29
    Thanks for the great, informative and thought provoking content Matt🤙
  • @ToreDL87
    There was another air gunner touching in on this issue too with his lothar walther barrel, he had an issue where the barrel was out of spec in various ways, not only crowning and chamber were not up to scratch, but also air nozzle placement was a tad out of spec. He investigated further and found that also the inside of the barrel was burred, so he was getting pellet spiral despite weighing the pellets. It's assumed that all of this was what was contributing to pellet spiraling. When he wasn't getting pellet spiraling he was pulling long range shots, smacking pigeons from distances where they were almost a blur in his scope. I'll look for this channel, very valuable content that we could all learn from and I hope it hasn't been deleted or removed yet, I believe he even follows this channel.
  • @ajb3470
    Really good video Matt! Thanks for your hard work, time and effort to put all that info into a really accessible format. Keep up the good work and hope all is well!
  • This video answers so many questions I have been pondering on for years. Thank you for all the work you put into this.
  • @adijorio
    You’ve articulated this issues, the possible/probably causes in a logical and well thought out manor. Thank you for the time, energy and effort that when into this video.
  • Awesome video always Matt. Thank you for the follow up. I have been testing this out between slugs and pellets. Keep up the awesome work.
  • @Marcus_Shaw
    What an incredible depth of knowledge! Thank you so much for sharing your experience 🙏👍