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fishing43 is right, vinegar is a no no. It will get rid of the rust, but it will also eat into the steel after the rust has gone, and you can't see what it's doing if it's in the barrel. The only de-rusting chemical I use is Evaporust, it removes iron oxide but does not etch steel. I recently...

Perhaps he means the BSF 55, it was made in Bavaria.

The 'smooth twist' idea is far from new. Holland & Holland, English gunmakers, built a rifle which only had the last three inches rifled in 1885. It was called the Paradox, and was the invention of Colonel George Fosbery, the same man that invented the automatic revolver.

I'm 84, and believe me age does take its toll. I have just overhauled an Original 35, a Webley Mark 3, and a Mark 1 Airsporter, and a few days ago got a chance to shoot them. My old muscles were not up to it and I had to get a friend to cock them for me. So it's back to my trouble free S410 and...

Not exactly an airgun, but what pressures are obtained in light gas guns? I'm sure they exceed 32,000 psi.

Don't worry, I like banter. And yes, I am a taxpayer, and have been for over 60 years. Born in Cornwall, only been abroad once. When I was younger a gun license was the equivalent to £0.375 from the Post Office and entitled to by an airgun or a shotgun and ammunition. The Post Office needed...

Airgun shops may be more common in the UK, but that doesn't mean we can buy anything there. I wanted to buy a tin of pellets. Simple enough, you'd think. But I have no driving license, no passport, and no Firearms Certificate. So could not have pellets. Had to get someone else to buy them for...

Mike, a boar is a tough animal, so did you go for head shots or just shoot the youngsters?

Sorry for the delay, my book was on loan to a friend. It is in "The modern shotgun" by Burrard, Vol II. I have the 1955 edition, your library can get it. The method was invented in the US by a man called Bradford in 1942 and improved on by Weller in 1952. The US Patent Office will most likely...

The opposing pistons counteract the movement of the gun while the pistons are moving. But the air that pushes the pellet in one direction pushes the gun in the opposite direction. Make that "Absolutely no FELT recoil" and I'd agree, because the recoil will be too light to be felt. But it will...

Dual, it was the claim that the Whiscombe has no recoil. I know that there is very little recoil from one, but if the pellet goes one way the gun goes in the opposite direction. It's simply a matter of momentum. Or rather, momentum in its simplest terms.

DualMag, I know Isaac was right, my question was just me querying a ridiculous statement.

rj222, my apologies, I should have added that it was a joke. I thought it was obvious. No recoil? So Newton was wrong?

So THAT'S what they mean by tuning an airgun. I've been doing it wrong for years.

I doubt if you will get a patent as it looks like a new version of an old idea (1940s). Not holding that against you, though, and I hope you make a successful chronograph.

Disc or caliper brake?

Markhopper, the first post says they're .30 calibre, 62 grains, 900fps.

Put pellet base down on a smooth flat surface. Thick glass or an old plate will do. Press down lightly and move the pellet in a circle about an inch across. Try for size, repeat if necessary. I have increased the diameter of thousands of .22 pellets to fit my pre 1950 Airsporter and Webley air...

Not exactly air gun related, but 'straight' rifling was also tried in shotguns in the 1960's. It reduced the spread cause by centrifugal force due to the shot charge rotating as it went up the barrel.