The first gun is my Webley FX2000 pneumatic airgun in .22 calibre. Using Airarms Field Pellets 16gr (5.52mm). It's running at around 30ft/lbs and 950ft/s. This gun is very accurate to around 60/70 yards and had a pretty flat trajectory to around 60 yards. It's a far safer gun for shooting pigeons and squirrels out of trees. Pellets are stablished using their shuttlecock shape and not completely by the spin, like a bullet. So when they lose speed, they start to tumble and lose their energy. They then fall safely to the ground. Bullets maintain a ballistic trajectory and can be lethal when they return to the ground. So you can never shoot a firearm into a tree. I get around 60 full power shots from this gun and so it's good on air, as well. I paid £275 for this gun in mint condition.
The second gun is a CZ452 in 22LR. It's got a 20 inch barrel to ensure that all the powder is burnt before the bullet leaves the barrel. I had a moderator made for this by John Bowkett. This was the quietest moderator in the shooting times test. Used will Eley Subsonics, this gun is extremely quiet. As quiet as a moderated pneumatic airgun. It's ideal for night time rabbit work or close range fox control (50yards). It's running at around 100ft/lbs and is the quietest firearm that I have seen to date. I paid £250 for it in mint condition.
The final gun is a Baikal .410. I test 10 different cartridges in this gun (see my test) and I only found one that was truly quiet. These were Eley Fourlongs. Using this combination you can hear the hammer click and the shot hit the bird. It's a great gun for roost shooting pigeons, shooting squirrels and rabbits. It's not as quiet as the first two guns, but very quiet for a shotgun. I paid £250 for this gun.
All of these guns are great, if noise could possibly be an issue. The FX and CZ can be used, without others knowing you are actually hunting nearby.