Barrel forms the main part of dart. Nowadays, tungsten darts barrel is more and more popular all over the world, and we supply various tungsten darts barrel as per our clients’ specific sample or design.
Based on a very theoretical reasoning the long cylindrical tungsten darts barrel could be the best of them because it is the slimmest and allows the tightest grouping. Good for 140s and 180s. But this reasoning doesn't help you when you are not able to handle such a barrel. Selecting the right shape is a matter of personal preference. Choose what feels comfortable for you. This is much more important than an abstract or "academic" reasoning about theoretical advantages or disadvantages of some shapes.
Today's standard material is Nickel-Tungsten. Tungsten is a very dense material, so darts with a considerable weight can be made quite slim. The invention of tungsten darts barrel had a big impact on the sport. With the new darts it was possible to achieve much better grouping than before, and the averages in pro games have improved dramatically. It is not an overstatement when this development is referred to as "the tungsten revolution".
Because of technical difficulties with manufacturing a 100% tungsten darts barrel is not available. All "tungsten" darts you can buy are in fact made of tungsten alloys, with Nickel-Tungsten being the most common one. When you buy a dart the amount of tungsten in the alloy is given by a percentage number. So a common "80% Tungsten" dart has 80 percent tungsten and 20 percent Nickel, Copper and/or Ferro. Tungsten darts are available from 80% to over 90%. The more tungsten the slimmer the tungsten darts barrel- and the more expensive - the dart is. If the high-percentage tungsten darts are worth the higher price is an open question. Personally I think that 80% tungsten are good enough for almost everyone.
Remember: the only benefit from a high tungsten share is that the dart can be made slimmer than a dart with the same weight and a lower tungsten share. In no way do higher tungsten percentages indicate some sort of overall better quality or better machining.
In recent years a growing number of people has become allergic to Nickel. With Nickel-Tungsten darts being the standard equipment nowadays these people will have problems with their darts. There are a few darts available with different tungsten alloys, such as silver tungsten or copper tungsten. However, these darts are very rare. The major dart manufacturers don't supply them. If you are allergic to Nickel you will probably have to look for these alternatives.