08-03-2014, 04:09 PM
Quote:how many inches this bullet would have to travel, in the barrel it was fired from, in order for it to make one complete revolution?
Hi Bob..
Isn't a full rotation defined by the barrel itself... the grooves in the barrel complete 4 rotations,or something like that? or is it a 4 groove barrel with an unknown number of rotations?
The distance between these complete rotations within the barrel will give you your distance since it does not matter whether the bullet falls out of the barrel or is shot out,
.... the bullet wouldn't rotate at all without those grooves I imagine...
So I looked up rifling and found this on wiki: do we know the Twist Rate of the MC?
DJ
Rifling is the process of making helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis. This spin serves to gyroscopically stabilize the projectile, improving its aerodynamic stability and accuracy.
Rifling is often described by its twist rate, which indicates the distance the rifling takes to complete one full revolution, such as "1 turn in 10 inches" (1:10 inches), or "1 turn in 254 mm" (1:254 mm). A shorter distance indicates a "faster" twist, meaning that for a given velocity the projectile will be rotating at a higher spin rate.
http://en.wikipedia.org/wiki/Rifling
Once in a while you get shown the light
in the strangest of places if you look at it right..... R. Hunter
in the strangest of places if you look at it right..... R. Hunter