Shotguns?

[sAsLEX]

Sorry, so the police just KNOW that the driver of every car they chase that is over the speed limit has done nothing other than exceed the speed limit????

your wording suggested that they had prior knowledge of the crazy axe man being in the car

[Lou Girardin]

I hope like hell you're a shitload older than me after making THAT statement!!!!

Yeah but you still have 'cop memory'. Like remembering offenders names from 20 years back. I still do OK on reg plates.

[scumdog]

your wording suggested that they had prior knowledge of the crazy axe man being in the car

Yeah - THIS time they did, other times the find out things AFTER the event....

If the guy had gone scorching past a cop and nobody knew what he had done and the cop shrugged his shoulders and thought "neh, he's only speeding"...???

And a short distance down the road the guy had then taken to somebody else the media would start salivating and the muck-forks would be working overtime.

All hypothetical of course.....

Sort of like most of the 20/20 hindsight in a lot of the postings on the topic

[Lou Girardin]

BTW I noticed there was no criticism of the car chase in Canterbury when the Police were trying to stop (did stop) a mad axe weilding lunatic that had already attacked somebody.

He'd already shown that he was dangerous by attacking someone. Which is a little different from chasing someone till he crashes because he was speeding initially.

[Lou Girardin]

your wording suggested that they had prior knowledge of the crazy axe man being in the car

They did. A cop saw the attack in Bealy.

[scumdog]

They did. A cop saw the attack in Bealy.

See post #217.

And it seems like a hell of a lot of site members only get their news via KB!!!!

(normally much later though)

[Sniper]

you guys never learn the sniper credo?..

one shot one kill?

This was a long time ago before I was even in NZ

deal... when do we start?

I wouldn't be so rash as to test someone from the forces.

[Stevo]

This was a long time ago before I was even in NZ




I wouldn't be so rash as to test someone from the forces.

Must be time you went to bed then Sniper to dream about the "forces"

[Stevo]

I don't know shit all about balistics but it seems to me that there would be an optimum rate of spin for each class of ammo and the weapons barrel should be rifled to generate that ideal rate of spin.

If ya ask me you seem to have ballistics sussed!
Trouble is.................... often these optimums can only be done by trial and error. As someone suggested most projectiles have recommended twist rates, so as to take a large portion of testing away. For example if the twist rate of a rifle is 1/12, the bullet is doing 1 rotation every 12 inches, and if it leaves the barrel at 3000 ft/sec it is not rocket science how many revolutions per second it is doing. If the bullet was solid lead in a 308 for example how many projectiles would hit a target (if any). The copper jacket is only to hold the lead together, but too faster spin (because of the leads rotational inertia) will cause some to self destruct, because the copper jacket simply cannot hold the lead in. Too little spin causes a projectiles filght to be more easily affected by outside factors (wind, or blades of grass, whatever)
The reason some people say "I can group 1 inch at 50 yards" and another person can say "I tried that ammo, and it was crap" is because of harmonics. In other words badly tuned equipment will cause the rifle to vibrate like a tuning fork.

[Stevo]

But if you use reverse thread, will the bullet fly backwards or will its range be significantly lowered?

No
No
The projectile will fly backwards if you put it in the case backwards.
If a bullet rotated the other way range would not be affected. (Debatable though whether one would be required to reverse the barrel thread if the direction of the rifling was changed. Could be a problem...... maybe)

[Pixie]

No
No
The projectile will fly backwards if you put it in the case backwards.
If a bullet rotated the other way range would not be affected. (Debatable though whether one would be required to reverse the barrel thread if the direction of the rifling was changed. Could be a problem...... maybe)

Except where it is fired straight up.
Then it will fall back to earth backwards,still rotating

[sAsLEX]

Except where it is fired straight up.
Then it will fall back to earth backwards,still rotating

nope it wont, a bullet is carefully designed to fly in one direction, the bullet would there fore flick round during falling and jab in to the ground front first.

try throwing a dart straight up they will fall point first most times

[Sniper]

Must be time you went to bed then Sniper to dream about the "forces"

If I still had a kneecap I would still be there

[Sniper]

The projectile will fly backwards if you put it in the case backwards.
If a bullet rotated the other way range would not be affected. (Debatable though whether one would be required to reverse the barrel thread if the direction of the rifling was changed. Could be a problem...... maybe)

That was what I was looking for, but hey, I did teach you that

[sAsLEX]

That was what I was looking for, but hey, I did teach you that

hmmm still going to have to go with the fact the due to the shap of most "rounds" that they would not be to stable flying backwards and would probally right themselves during flight