Here is a heavy autumn nymph that is easy to tie and pushes all the buttons for cold water trout and grayling. Tie it without the bead or adjust the size and weight to fish in the required water depth and sink speed.
Hook: Mustad Heritage S70AP # 8-12
Bead: Slotted tungsten
Tying thread: Sheer 14/0 Dun
Tail: Coq di Leon
Abdomen: Wild Turkey biot
Thorax: Peacock herl
Hackle: Natural CDC dubbing loop