This is the perfect wool for the killer bug classic Grayling pattern from nymph expert and legendary river keeper Frank Sawyer. This fly pattern still doesn’t disappoint, but if you follow Sawyer’s tying instruction, the killer or (grayling) bug as it was originally named, could and should only be tied with one brand and shade of wool, Chadwick’s No 477. Semperfli have a card of the original Chadwicks 477, which they used a blend of wools to match dry and particularly wet with their substitute as they developed it. This is one of the most accurate Chadwicks 477 substitutes available. The Killer bug pattern may be one of the most simple flies ever tied. Tie it with Semperfli Chadwicks 477 Substitute!
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