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Scientific Anglers Fly Lines and Fly Line Backing are available at Traditional Angler
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Scientific Anglers Fly Fishing Fly Lines, Fly Fishing Outfits, Fly Fishing Reels, and Fly Fishing Accessories are available at Traditional AnglerScientific Anglers Mastery Expert Distance Fly Lines

Scientific Anglers Mastery Expert Distance Floating Fly LineWith advanced taper design and harder, stiffer coating, the Expert Distance Mastery Fly lines are designed to provide maximum casting distance. Typical “western” conditions, larger flies, long distances and windy days are handled best by these lines. Ideal for casters who need to carry and control a very long line. Expert Distance lines are best used with 9' or longer rods.

The Mastery Expert Distance series features a braided multifilament nylon core with optimum air entrapment for minimum memory and maximum floatation.  It is coated with a specially formulated PVC with built in AST technology offering superior lubrication. This PVC has slightly increased density to reduce line diameter. Expert Distance weight forward designs have extra long heads and tapers custom tailored to each line weight. Convex compound front tapers delay turnover for long casts and provide the necessary power to handle larger flies and wind. Long rear tapers are used for smooth distance casting and better mending and roll casting.

Scientific Anglers Ultra 4 Fly Fishing Fly Lines available at Traditional AnglerMastery lines incorporate Scientific Anglers' Advanced Shooting Technology. The unique 'dry-slick' coating enhances every aspect of floating line performance. In just three short years, amazing AST - Advanced Shooting Technology - has redefined fly-line performance. Using a patented coating process, AST is integrated within the line coating to achieve a unique 'dry' slickness that keeps the line permanently slick and continuously clean. Try an AST line just once, and nothing else will do.

The dry slickness of AST prevents dirt and algae from clinging to line, which means line stays cleaner and floats higher for longer intervals. AST isn't just permanently slick - it's lightning slick for the fastest, smoothest shooting of your life. With AST, line shoots through the guides virtually friction-free and keeps on doing it for the life of the line - without the need for dressing. Plus, because the line stays so clean and free of debris with AST, Scientific Anglers lines are significantly less prone to wear and corrosion.

Mastery Series Expert Distance Floating Fly Lines

  • Scientific Angler Mastery Expert Distance Floating Fly LinesSmooth casting and excellent accuracy with exceptional delivery from all casting ranges

  • Shoots like a rocket and provides outstanding line control at long and short range

  • Perfect for western fishing, including casting large flies long distances without sacrificing presentation

  • Roll casts and mends long distance like a DT line, but with superior shootability


  • Extra-long compound head design puts more weight in the front of the head to further delay turnover at long range for superior delivery

  • Long front taper for smooth turnover

  • Longer rear taper and running line work together to provide incredible control from long range


  • Braided multifilament nylon with optimum air entrapment for minimum memory, maximum floatation


  • Stiffer, specially formulated 3M PVC integrated with patented AST - Advanced Shooting Technology

  • Slightly increased density reduces line diameter and allows for longer casts

  • Extra-hardness reduces friction and durability

COLOR: Mist Green




Wt Tip Front Taper Front Belly Rear Belly Rear Taper Running Line Head Length Total Length
4 0.5 12.0 16.7 12.7 25.0 38.6 66.4


5 0.5 13.0 17.2 13.2 25.0 36.6 68.4 105.0
6 0.5 14.0 17.7 13.7 25.0 34.6 70.4 105.0
7 0.5 15.0 18.2 14.2 25.0 32.6 72.4 105.0
8 0.5 16.0 18.7 14.7 25.0 30.6 74.4 105.0
9 0.5 17.0 19.2 15.2 25.0 28.6 76.4 105.0

Copyright © 2002, Traditional Angler, LLC. All rights reserved.
Revised: 04/21/07.