ACCURATERELOADING.COM BLACK POWDER FORUM


Moderators: Saeed
Go
New
Find
Notify
Tools
Reply
  
recoil
 Login/Join
 
One of Us
posted
In the 1911 Winchester catalog recoil numbers are given for all of their cartridges. Black powder loads are listed at significantly higher recoil than smokeless with the same bullet and same velocity. How is this possible?
 
Posts: 261 | Registered: 02 December 2005Reply With Quote
one of us
Picture of bpesteve
posted Hide Post
Because the amount of powder does significantly affect recoil calculation, even with the same resulting velocity and bullet weight.

A complete formula for recoil calculations includes the weight of powder with its own velocity, most often given as some 4700 fps.

Here's an example I pulled off thehighroad web site:

Free recoil energy (in f.p.e.) = ([MV + 4700 P] ÷ 7000)² ÷ (64.34809711) ÷ (W)

where:

M = weight of the projectile in grains
V = velocity of the projectile in feet per second
P = weight of the powder charge in grains
W = weight of the firearm in pounds

There are a few other considerations when comparing black powder to smokeless, but the above formula gives you the idea.
 
Posts: 964 | Location: paradise with an ocean view | Registered: 09 April 2002Reply With Quote
One of Us
posted Hide Post
The increased weight of the powder. Of course! I can sleep at night now!

I would question the velocity of the powder. It would seem that it's velocity is restricted to the velocity of the bullet as long as the bullet is in the bore, and after the bullet leaves, it is 'water under the bridge'!
 
Posts: 261 | Registered: 02 December 2005Reply With Quote
one of us
Picture of bpesteve
posted Hide Post
Even without a bullet, the compressed air leaving a balloon will fly it all around the room...
 
Posts: 964 | Location: paradise with an ocean view | Registered: 09 April 2002Reply With Quote
One of Us
posted Hide Post
Yuh, likely. Thanks for the info.
 
Posts: 261 | Registered: 02 December 2005Reply With Quote
one of us
posted Hide Post
Hmm, could it also be due to the fact that black powder is an explosive whereas smokeless powder is not. Smokeless burns very rapidly, and presumably progressively, thus the recoil is not instantaneous as in "explosion"?
Peter.


Be without fear in the face of your enemies. Be brave and upright, that God may love thee. Speak the truth always, even if it leads to your death. Safeguard the helpless and do no wrong;
 
Posts: 10505 | Location: Jacksonville, Florida | Registered: 09 January 2004Reply With Quote
One of Us
Picture of NormanConquest
posted Hide Post
The in lies the reason that the British troops in the Peninsular campaign were always told to aim low when in line to the approaching French.Not just the combustion but the muzzle rise as well.


Never mistake motion for action.
 
Posts: 17357 | Location: Austin, Texas | Registered: 11 March 2013Reply With Quote
  Powered by Social Strata  
 


Copyright December 1997-2023 Accuratereloading.com


Visit our on-line store for AR Memorabilia