An RCH might be fine enough for a scope wire, it would be fun getting it!
Hah! I have some RCH's (well, they are more strawberry blonde) in my fly tying kit for wrapping the bodies of certain mayfly patterns. Generously donated, and harvested by me, from a long ago GF. I get a smile on my face when I tie the flies, and the trout (at least the boy trout) go crazy for them.
