Remington model 597

[texmo]

Bingo! nice punchline, great timing.

Well thank you Lou

[Lou Girardin]

Nah, Finn is a kiwi. It was his mom.

Kiwi's have Mum's too. Step away from the TV.

[scumdog]

.
A full grown stag shot at 100 metres with a .270 in the chest, gets tossed backwards on it's arse and the exit wound aint pretty.

Ballistics is a massive field of knowledge and quite intricate. There are so many variables, such as wind, temperature, altitude, if you are shooting uphill and downhill etc.
But, if the force of the recoil was equivalent to the force of impact, using a larger calibre rifle, you wouldn't have a shoulder.

Just a quick note: In the book by Matt and Bruce Grant "The Sharpshooter" (if my memorey serves me well) they do an experipent where they hang a large box of gravel from a pivot (so it can swing like a pendulum) and attached a crude marker and graph to it.

Now this box weighed close to the live-weight of a red deer and was big enough that no bullet would penetrate it.

They fired a variety of bullets at it to see how much it moved, sort of to test the 'blow it off its feet' theory.

They were surprised at how little the box moved.

At the end of it they found they could get the box to move just as much with a cricket ball thrown really hard close up as it did with a shot from a 303 from 20 yards.

Food for thought eh?

[kickingzebra]

Surely that would depend on the type of projectile used... Different ammunition exchanges its energy in different ways

[scumdog]

Surely that would depend on the type of projectile used... Different ammunition exchanges its energy in different ways

But at the end of the day if its all used up on the target then its all used up.

On an animal it can mean the difference between a nasty surface wound (not nice) or over penetrating and going right through. (no good for hunting)

[Lou Girardin]

Just to keep this going, how do recoiless rifles work?

[scumdog]

Just to keep this going, how do recoiless rifles work?

Very well!

NEVER stand right behind one - you'll only do it once.

[kickingzebra]

Im postulating here, but doesn't a recoiless rifle fire a self propelled projectile, not unlike a rocket?

[Sniper]

The recoilless rifle functions very much like a conventional gun. The projectile and propellant are supplied as a single round and loaded into the breech. When fired, however, instead of all the propellant blast driving the projectile forward a large portion is directed in the opposite direction. Since recoil has been mostly removed, much of the weighty and complex gun carriage and recoil damping mechanism can be dispensed with. It is rare for the momentum to completely balance and real world recoilless rifles do recoil noticeably.

[Lou Girardin]

The Germans developed a recoiless rifle in WW2 that fired a charge of shot to the rear to balance recoil. It wasn't very popular with the troops.

[scumdog]

The Germans developed a recoiless rifle in WW2 that fired a charge of shot to the rear to balance recoil. It wasn't very popular with the troops.

As per my comment in post #142.

And they raise quite a flurry of dust - gives the position away to the 'other side'.

[Sniper]

And they raise quite a flurry of dust - gives the position away to the 'other side'.

I would think the volume of fire coming from them would give away their position.

Lou, sure it wasn't a german design the russians used?

[Lou Girardin]

I would think the volume of fire coming from them would give away their position.

Lou, sure it wasn't a german design the russians used?

Perhaps, I wasn't there.

[beyond]

Just to keep this going, how do recoiless rifles work?

You pull the trigger and chuck it away as fast as you can. Timing is critical of course.

Seriously, any high calibre rifle has recoil to a certain extent. The heavier the rifle the lighter the kick for that calibre. Some use muzzle brakes which reduce recoil but increaes noise. Instead of getting a sore shoulder, you go deaf, in time.

To reduce recoil to minimum for harder kicking calibres, you can use fancy recoil pads, muzzle brakes and heavier rifles and a semi auto helps to dissipate the recoil to a certain extent as some of the enrgy is used to cycle the next round.

[beyond]

Just a quick note: In the book by Matt and Bruce Grant "The Sharpshooter" (if my memorey serves me well) they do an experipent where they hang a large box of gravel from a pivot (so it can swing like a pendulum) and attached a crude marker and graph to it.

Now this box weighed close to the live-weight of a red deer and was big enough that no bullet would penetrate it.

They fired a variety of bullets at it to see how much it moved, sort of to test the 'blow it off its feet' theory.

They were surprised at how little the box moved.

At the end of it they found they could get the box to move just as much with a cricket ball thrown really hard close up as it did with a shot from a 303 from 20 yards.

Food for thought eh?

Errmmm, huge difference between a box of gravel and some lovely soft deer fillet.

The bullet hits the skin of the deer and immediatley starts expanding into a lovely mushroom shape (yum, mushrooms.) Any way, as it passes through all that lovely soft meat, expanding as it goes, the pressure wave pushes and gathers more and more meat in front of it. The energy is ideally expended while within the animal, but if and when it does break out, a humungous amount of gathered meat goes with it. The energy and shock is enough to bowl the animal over in most cases, except where there is not a lot of meat, i.e. the stomach region.

The closest tests of calibres to mimick large wads of fillet, is the use of large blocks of gelatine. Ammunition manufactures use this in the absence of bodies, to test their rounds for penetration, shock, expansion and energy dissapation. A box of gravel doesn't cut it. Might as well find a brick wall and head butt it instead of giving someone a Liverpool kiss. Same result.