AmericanLongRifles Forums

General discussion => Black Powder Shooting => Topic started by: David Rase on January 13, 2025, 06:47:44 AM

Title: Does rifling cause the muzzle flash to spiral?
Post by: David Rase on January 13, 2025, 06:47:44 AM
A friend of mine took this photo of one of our guys firing his rifle at last Sundays monthly shoot.  Very interesting photo.  If you look closely, and we blew the picture up, you can see that the flame coming out the end of the barrel appears to be spiraling.  Tell me what you think.     
(https://i.ibb.co/7CxVqKP/Norm-double-charge.jpg) (https://ibb.co/sRpQZqn)
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: smylee grouch on January 13, 2025, 06:55:50 AM
Almost looks that way. I wonder if you could figure out the twist rate. Maybe I have too much time on my hanfs.  ;D
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Daniel Coats on January 13, 2025, 04:54:35 PM
My wild guess is it's a one of a kind photo and man is it cool looking!
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: 45-110 on January 13, 2025, 05:56:57 PM
It looks like the whole compressed ignited powder charge cylinder is spinning as it comes out.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: JPK on January 13, 2025, 05:57:26 PM
If the flame is indicative of the rifling then he has about a 1 in 12” twist. Neat photo none the less.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Pukka Bundook on January 13, 2025, 06:45:36 PM
Its like one of those medieval depictions, of where the devil is riding the ball out the muzzle, or not!

Very  neat picture!
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Daryl on January 13, 2025, 11:47:36 PM
It is a neat picture, one I've never seen before, although I've seen pictures of muzzle flash.

(https://i.ibb.co/YkJtqsC/LB.png) (https://ibb.co/KqB93vP)
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: wolf on January 14, 2025, 02:33:45 AM
it looks like a right hand twist to me!
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Flint62Smoothie on January 14, 2025, 03:22:43 PM
In the photo the barrel is moving, so I’d say it is more an artifact of the barrel movement, than rifling. FWIW I’ve tens of photos of rifle muzzle blasts and none show any spiral effect, nor do any slow motion videos I’ve seen on YouTube.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: tooguns on January 14, 2025, 05:43:19 PM
IMHO, CGI rate of twist is too fast for a round ball barrel.  but, I could be wrong!
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Daryl on January 14, 2025, 11:06:27 PM
Certainly looks that way to me as well.
Then notice 2 feet from the muzzle, the rot slows to a round ball twist.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: tooguns on January 16, 2025, 05:00:09 PM
I might be wrong, but wouldn't the flash follow the rot say 1 in 48?
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Daryl on January 17, 2025, 01:42:23 AM
If it followed the rifling, then it should show the ROT. The picture Dave put up shows a VERY fast twist that appears to slow down to almost straight, very quickly.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: taterbug on January 17, 2025, 04:02:00 AM
it may be an artifact of 'digitizing'. 
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Dphariss on January 22, 2025, 03:00:48 AM
It appears to be a very fast twist by the look of it so I thing its something other than that.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Daryl on January 24, 2025, 04:58:11 AM
Quote from: taterbug on January 17, 2025, 04:02:00 AM
it may be an artifact of 'digitizing'.

My thought, as well as the rate of twist quickly slows down.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Ky-Flinter on January 24, 2025, 06:22:49 AM
It looks like those bolts of light (?) in Raiders of the Ark, when they opened the Ark!

Very cool picture David.  Maybe it's gain twist?

Ron
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: 5judge on January 25, 2025, 04:54:29 AM
Believe one can detect the rifling in this shot the muzzle blast of a 7-inch Confederate Brooke rifle speaking at the naval museum at Columbus, Georgia....


(https://i.ibb.co/rwGV3j1/abrookee.jpg) (https://imgbb.com/)
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: Robert Wolfe on January 25, 2025, 05:14:56 PM
Regardless of it's origin - that twisting fire is very cool. Wonderful picture.
Title: Re: Does rifling cause the muzzle flash to spiral?
Post by: tooguns on January 29, 2025, 04:40:11 PM
He's a which!!! IT'S lightening!