Chadwicks 477 Wool
The legendary Killer Bug—originally known as the Grayling Bug—was created by renowned river keeper and nymphing expert Frank Sawyer. Simple yet deadly effective, this iconic fly pattern was traditionally tied with one specific material: Chadwick’s No. 477 wool. For purists and serious fly tyers, that exact shade and texture matter.
At Semperfli, they had access to an original card of Chadwick’s 477 and used it as a benchmark to develop our premium substitute. By carefully blending wools to match the original's appearance both dry and wet, Semperfli has created one of the most accurate replicas available today.
