Beretta Silver Pigeon. The original Silver Pigeon was the successor to the Beretta 687, and the mechanism is that of the similar 686. There are six field versions, with a choice of fixed or multi-chokes, plus multi-chokes guns in 20- and 28-bore. Barrel options for Sporters are 28in, 30in and 32in.Â£950.he original Silver Pigeon was the successor to the Beretta 687, and the mechanism is that of the similar 686. There are six field versions, with a choice of fixed or multi-chokes, plus multi-chokes guns in 20- and 28-bore. Barrel options for Sporters are 28in, 30in and 32in. Â£950.
Cupro-The European cousin of tencel, Cupro is also somewhat similar to rayon in that it is reprocessed cellulose.Like tencel and rayon, the base material for cupro is a regenerated cellulose fiber.obby fabric refers to any type of cloth that uses a dobby weave. Dobby weaving machines raise or lower the warp threads, i.e. those that run the length of the fabric, during â¦ the weaving process to create patterns such as stripes, checks and designs.
It is regenerated from solution by adding sulphuric acid. Thus rayon is 'regenerated cellulose' and it is used for making fabrics like stockings, shirts etc. Aim of the projects The main objective of the project is to illustrate the preparation of rayon by the cuprammonium process.