Wonderful YouTube channel on airgun performance and accuracy
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elementary primers for the unknowning, newbies
like any education, there needs to be a 1st grade for beginners
like any education, there needs to be a 1st grade for beginners
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graphics would greatly improve these sound bites but in a part 2 video . I think just the audio is perfect for the first presentation of knowledge gained . IE: no visual to take the mind away from what is being said .
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Yes, and even some ol timers can benefit too.
Watching The videos is a way easier way to educate people than some wise soul typing out the info with their fingers.
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Definitely A.I. generated. Besides the generic, monotone voice; highly unlikely a human airgunner would use “wear and tear” to describe the effects rifling grooves have on the pellet and barrel.
“rifling grooves can also create wear and tear on both the pellet and barrel itself.”
“rifling grooves can also create wear and tear on both the pellet and barrel itself.”
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Probably not, as it does contain mistakes, the most obvious of which is the comments on Magnus, which has little effect on the trajectory unless you have a very bad pellet.
A few of their videos have basic mistakes, probably obtained from the internet.
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1 The Magnus, which I have already touched on.
2 Talking about the spin giving stability, there is more to pellet stability than just the spin.
3 Pellet lead is really too soft to wear out a barrel.
4 The spin stability will change the trajectory, both laterally and vertically.
5 Even without spin, a pellet will normally remain stable over long ranges, it is just not very accurate. This is why all aerodynamically stable ballistic projectiles are given some spin, to aid dispersion, not for stability.
6 The pellet is not affected by the rifling grooves after leaving the barrel. It is affected by the spin imparted by the rifling, which has a negative effect on the growth of yaw wave lengths and in spin drift, but the spin drift is caused by the gyroscopic yaw of repose and nothing to do with Magnus.
Each thing is minor on its own but taken as a whole they all build up to give a fake impression of how things work which take a lot of effort to put straight by other means.
This video is better than the one on BC's where even the basic equation for working out a BC is wrong. Both videos look like a random collection of information from various sources on the internet put together by AI or humans who don't know much, if anything, about the subject. It is a complex subject which is difficult to explain in simple terms, but that is not really an excuse for incorrect information in a video which is supposed to educate new shooters.
2 Talking about the spin giving stability, there is more to pellet stability than just the spin.
3 Pellet lead is really too soft to wear out a barrel.
4 The spin stability will change the trajectory, both laterally and vertically.
5 Even without spin, a pellet will normally remain stable over long ranges, it is just not very accurate. This is why all aerodynamically stable ballistic projectiles are given some spin, to aid dispersion, not for stability.
6 The pellet is not affected by the rifling grooves after leaving the barrel. It is affected by the spin imparted by the rifling, which has a negative effect on the growth of yaw wave lengths and in spin drift, but the spin drift is caused by the gyroscopic yaw of repose and nothing to do with Magnus.
Each thing is minor on its own but taken as a whole they all build up to give a fake impression of how things work which take a lot of effort to put straight by other means.
This video is better than the one on BC's where even the basic equation for working out a BC is wrong. Both videos look like a random collection of information from various sources on the internet put together by AI or humans who don't know much, if anything, about the subject. It is a complex subject which is difficult to explain in simple terms, but that is not really an excuse for incorrect information in a video which is supposed to educate new shooters.
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The current trend is to go heavy and fast with little to no regard to the twist rate of the barrel, so before a diabolo even leaves the barrel:
Learn About How PCP Airgun Internal Ballistics Work
Internal Ballistics starts with a pellet at rest. When the gun is fired, air pressure acts on the base of the pellet, creating a force to accelerate it.
hardairmagazine.com 
How To Find the Ideal Twist Rate for Your Rifle
Let's talk about twist rates. Specifically, I want to dig into the purpose of rifling and how to determine the right twist rate for your rifle and cartridge. There's a bit of math here, but I promise to give you an "easy button" by the end. So let's get to it.
www.everydaymarksman.co Then once the diabolo has been hurled from a totally miss-tuned rifle:
I used the above three references plus all of your AGN posts regarding diabolo ballistics when I tuned my two FX Impact M3's, one a .177 the other a .30.
I appreciate your willingness to transfer your knowledge.
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That Fulton tutorial was a fascinating read. They don't specifically discuss diabolos, but if a subsonic pellet, spinning too fast, has a strong Magnus moment ahead of the cg then it will increase precession, or spiral more. The words type out but it may take some time to visualize that in my head.
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From the twist rate document I found a "relationship factor" between BC, grain-length, and weight for high performance rifle bullets.
For diabolos I dropped the BC from the pivot table as the BC data differed for the same pellet and compared only the grain-length to weight ratio of the diabolos used in Olympic 10 meter competition to those of various high performance rifle bullets and the ratio range was the same.
The long waisted heavy .177 pellets I tested were all outside this range.
I don't know if this "relationship factor" means jack but the .177 long wasted heavies I tested did not tune well to my barrel twist rate and never grouped anywhere near as nice as the H&N 9.57 grain standard round nose diabolo - which just happens to fall in the middle of the ratio.
But then again LSD was legal when I was a teenager so it could be that too.
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Thanks for the compliment.The current trend is to go heavy and fast with little to no regard to the twist rate of the barrel, so before a diabolo even leaves the barrel:
Learn About How PCP Airgun Internal Ballistics Work
Internal Ballistics starts with a pellet at rest. When the gun is fired, air pressure acts on the base of the pellet, creating a force to accelerate it.
How To Find the Ideal Twist Rate for Your Rifle
Let's talk about twist rates. Specifically, I want to dig into the purpose of rifling and how to determine the right twist rate for your rifle and cartridge. There's a bit of math here, but I promise to give you an "easy button" by the end. So let's get to it.
Then once the diabolo has been hurled from a totally miss-tuned rifle:
I used the above three references plus all of your AGN posts regarding diabolo ballistics when I tuned my two FX Impact M3's, one a .177 the other a .30.
I appreciate your willingness to transfer your knowledge.
The main problem with many references is that they apply to bullets and pellets have a fundamental difference in that they use a combination of aerodynamic and gyroscopic stability. Thus, many of the calculators will not work for pellets, and the diagrams showing the effects of winds on the POI are also wrong. Even for slugs, which are much more like bullets, the answers may be inaccurate, as the methods tend to assume solid construction, not something with hollow point noses or heavily dished or hollow bases.
As for the heavy and fast with no regard to twist rate, again for pellets that could come back and bite you. This is because heavy pellets tend to have a more rearward centre of gravity position, closer to the position of the aerodynamic centre, which may lead to earlier spiralling.
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I would say, yes a rifling will rise wear as it increase friction / contact surface, but i also think at least in our " pure " lead slingers that wear will be minimal.
If you was shooting a smooth bore in a dusty place, the dust on pellets will probably be more abrasive / wearing than the rifling will do, so it must be minute things in this regard.
I do not like the AI or TTS ( Test To Speech ) things, to me it is a sign of laziness on the part of the producer of the content.
I acknowledge there can be a language barrier, and you sure also often hear that when AI or TTS try to pronounce a word spelled wrong, or i also think poor grammar can trip such software.
Aliso acknowledge some peple do not want their face on the tube, i am not too happy about that myself, though i have shared a few private videos in here, so wide open still just not searchable on youtube.
While traditional school / class room education was nothing but a nightmare to me, i can do it, especially with things i find a interest in, so i would take a guy and a black / white board giving me the run down.
If you was shooting a smooth bore in a dusty place, the dust on pellets will probably be more abrasive / wearing than the rifling will do, so it must be minute things in this regard.
I do not like the AI or TTS ( Test To Speech ) things, to me it is a sign of laziness on the part of the producer of the content.
I acknowledge there can be a language barrier, and you sure also often hear that when AI or TTS try to pronounce a word spelled wrong, or i also think poor grammar can trip such software.
Aliso acknowledge some peple do not want their face on the tube, i am not too happy about that myself, though i have shared a few private videos in here, so wide open still just not searchable on youtube.
While traditional school / class room education was nothing but a nightmare to me, i can do it, especially with things i find a interest in, so i would take a guy and a black / white board giving me the run down.
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