I need help....

 

I like the effects of rifling topic. Maybe I'll write a paper on it.........for my CNC class???........nevermind, I don't need a paper. At least you get to write a paper on something you are interested in. That always helped my grades.

 

 

                                                                          

 

That's funny right there. My CNC instructor wears Realtree. We talk hunting for 10-15 min. after class

 

 

1. Newtons laws of physics hold within the firearms community. Thus, if a
bullet is caused to spin either by a lefthand or righthand twist rifled
barrel, it does so because there is an exact same force (less frictional
losses) exerted on the rest of the rifle. Hence, as the bullet accelrates to
(say) the right along a rifled barrel, the rifle itself is is accelerated to
the left. The rifle wights more than the bullet, so the degree of
acceleration is proportional to the bullet/rifle weight ratio as a function of
the exit velocity of the projectile from the rifle muzzle.

2. From the 1850's onwards the British tended to have an empire where
rifled sporting firearms came into widespread use in India and Africa, and
said empire was populated by large/dangerous animals, in turn requiring large
bore / high energy projectiles to safely dispatch. Shooting large bore
projectiles has the downside that said projectiles tend to pound the user.
The larger the rifle bore, the larger the energy (in general terms) and hence
the larger the energy able to be transmitted either left or right by the stock
.... into the users cheek.

3. Here is the crux of the topic. By choosing to rifle the bore either
with right hand twist or left hand twist rifling, the designer can choose to
have the rifle stock twist into the shooters face or twist away from their
face. By convention, the British chose to have the rifling of their large
bore rifles cause the stock (remember Mr Newtons laws here) to move away from
the shooters face, rather than twist into their cheekbones. The recoil energy
transmitted to the users shoulder remains the same in both cases.
Interestingly, many American makers at the turn of the century made barrels
with a twist opposite to the "standard" British pattern, thereby causing their
customers to directly experiece a triumph of fashion over physics.

4. For an interesting demonstration of the abovee, obtain two identical
rilfes, preferably with high combs for scope mounts ... one with left hand
rifling, one with left hand rifling. Obtain a very solid cheek weld and fire
the same ammunition in both rifles. One rifle will twist into your cheek, one
will twist away from your cheek. You will immediately be able to tell which
rifling is which, as one of the rifles will smash into your cheek while the
other will not disturb you at all. The author had the opportunity to observe
this at first hand some 25 years ago, a lesson not easily forgotton in heavy
recoilng rifles.

 

 

                                                                                                  

 

David Marshall Williams, (Carbine williams)

 

Koshkin..... good point.

 

I also agree that unless you really know where your teacher is coming from that any gun related topic will give you unwanted attention that you wont enjoy.