There is a great deal of confusion between marjoram and oregano. They are related plants, but are two different species. They also taste similar, although oregano often has a stronger flavor, and both contain high amounts of antioxidants. To make it even more confusing, cretan oregano, O. onites, is also called French or pot marjoram and Greek oregano, O. vulgare, is often called wild marjoram.
Cylinder choke is an unconstricted barrel. The shot pattern spreads quickly. Improved Cylinder choke has a slight constriction. It allows the shot pattern to spread fairly quickly. This is a good choice for quail, rabbits, and other upland game. Modified choke has moderate constriction. The shot stays together longer, making the pattern denser and more useful at longer ranges. This choke is used often for dove hunting and is the preferred choke when using steel shot to hunt for ducks or geese.
The choke system is used to start cold engines. Since the fuel in a cold engine is sticking to the cylinder walls due to condensation, the mixture is too lean for the engine to start. The choke system will add fuel to the engine to compensate for the fuel that is stuck to the cylinder walls. Once the engine is warmed up, condensation is not a problem, and the choke is not needed. The air/fuel mixture must be changes to meet the demands of the needs of the engine. The ideal air/fuel ratio is 14.7 grams of air to 1 gram of fuel.