Discussion in 'Handguns: General Discussion' started by DMW1116, Nov 15, 2021.
Not tacticle warrier enough to comment, just a guess - the overall distance travelled by your bullet is probably too short for these kinds of stability perturbations to make any significant difference.
Let's just look at the Remington golden bullet as an example, according to this website,
The 22 golden bullet has a BC of .125 for it's 36 grain bullet. If we assume that the velocity listed (1280 fps) is correct then I won't expect that bullet (at that velocity) to go trans-sonic until around 50 yards.
You can run your own numbers for different loads here,
If the dreaded trans-sonic region really concerns you then just use Target loads which stay below the speed of sound from the get-go.
Me personally, I don't worry about it. My handgun ranges don't warrant the concern. Good luck. Good shooting.
Being that handgun bullets are basically blunt bodies I suspect it matters very little, as opposed to rifle bullets.
In the pursuit of the X-ring, I am my own worst enemy on the firing line .
90% and 110% are 'popular' boundaries for transonic.
Once any portion gets close to transonic the Bernoulli Equations simply fail.
A 'standing pressure wave' can exist and for the most part their is no air flow past that pressure wave.
The wave is not 'standing' in the sense of not moving, it moves with the projectile.
It is 'standing' in relation to the cross section shape of the projectiles.
It creates a large increase in Cd (the drag factor cross section.).
When it starts to break down the air flow resumes resulting in disturbances to the flight of the object.
With rifles, and hi velocity ammo, that occurs at about 80 yards. That is why rimfire competitors use standard velocity ammo, generally running around 1050 fps.
I've been advised about the transonic zone for 22 rifles just not for pistols or for larger calibers.
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