TheOstrich wrote:Can't access the Sun, so when you say "a less powerful gun", Cromwell, can I ask what exactly that means?
How do you define an assault rifle? (I've no knowledge in this area).
Is the gun on sale in the UK an automatic rather than single shot? With what capacity?
OK Oz, one by one.
A .22 long rifle cartridge will typically have these characteristics.
Weight of bullet 40 grns.
Muzzle velocity of bullet 1,085 feet per second.
Velocity after 100 yds 941 fps.
Muzzle energy 105 ft / lbs.
energy at 100 yds 79 ft /lbs
This is the "almost identical" gun available for sale in the UK.
Now, here are the same figures for the .223 cartridge used in the Bushmaster assault rifle used by the killer in the USA.
Weight of bullet 50 grns.
Muzzle velocity 3,300 feet per second.
Velocity after
500 yds 1,569 fps
Muzzle energy 1,209 ft /lbs
Muzzle energy after
500 yds 273 ft /lbs
So the USA bullet comes out of the muzzle three times faster with a ten times greater impact than the .22 for sale in the UK. After 500 yards the bullet from the American gun is still going faster than the bullet that has just come out of the British .22 muzzle. After 500 yeards the USA bullet still has more than three and a half times the impact of the bullet that has just come out of the muzzle of the British gun.
You may notice that the .22 figures only go up to 100 yards. This is because a .22 lr cartridge won't actually reach 500 yards, or anything like.
Assault rifle? Difficult. All assault rifles are semi-automatic, but not all semi-automatic rifles are assault rifles.
Assault rifles are generally considered to have been invented by the Germans in WW2. With typical teutonic efficiency, they worked out that a lot of combat was occuering at ranges up to 300 metres. Their existing bolt action rifles were immensley powerful and could reach up to 800 metres easily. So, the Germans invented a smaller, less powerful rifle with a self loading action, the Sturmgewehr 44. It fired the Kurtz (short) cartridge of 7.92 caliber. It did not shoot to 800 metres because it didn't need to. Because the cartridges were smaller the soldier could carry more of them. Because it was a semi-auto it sould lay down a supressive fire to cover an advance or halt an attack. The Kalashnikov of 1947 borrowed from this gun. The USA has had the M16 from circa 1967; the Bushmaster is a civilian version of this gun.
Other military issue semi-automatic rifles like the American Garand (and WM's FNL self loader) were effectively "old school" military rifles, differing from the bolt actions only in their operation. both were immensely powerful and had just as much range as the old bolt action guns, and more power.
Magazine capacity varies; a .22 Ruger will typically have a 10 shot magazine but Butler Creek sell a 25 shot magazine.