The Scientific Anglers Mastery Grand Slam Cold Fly Line brings the same trusted taper from the tropical Grand Slam series to cooler conditions. Designed for anglers chasing stripers, false albacore, or bluefin tuna in cold and moderate climates, this line delivers unmatched shootability, fast rod loading, and wind-cutting power when it matters most.
Built with Advanced Shooting Technology (AST) for exceptional slickness and durability, the Mastery Grand Slam Cold loads rods instantly, turns over big saltwater flies, and casts with authority in windy conditions. Its short, powerful head design makes for quick, accurate presentations to fast-moving fish, while the braided multifilament core ensures maximum flexibility and minimal coil memory in cold water. Practice for your next warm-water trip or fish coastal waters all season long with a line that performs wherever you go.
| S/A MASTERY GRAND SLAM COLD FLY LINE | ||||
| Line Weight | Head Length | Total Length | Head Weight | Grain Weight* |
| WF8F | 40.0' | 100.0' | 300gr | 235gr |
| WF9F | 40.0' | 100.0' | 335gr | 270gr |
| WF10F | 40.0' | 100.0' | 405gr | 320gr |
| WF11F | 40.0' | 100.0' | 450gr | 365gr |
| WF12F | 40.0' | 100.0' | 515gr | 435gr |
*Grain weight for first 30'
AST - Scientific Anglers’ patented dry-slick technology provides continual line slickness, allowing the line to shoot farther as it moves through the guides. Lines with AST easily shed dirt, algae, and other parasitic drag particles, allowing lines to cast farther, float higher, and stay cleaner than traditional lines
Welded Loops - Exceptionally slick and strong, Scientific Anglers' Welded Loops produce smoother casts and easier turnover with a seamless fly-line-to-loop transition, making for softer landings and cleaner pickups. The sleek design also maintains buoyancy for improved fly-line flotation and enables quicker connections between fly line and leaders or fly line and backing.
SA Line ID - Meet the Scientific Anglers Line Identification System. SA•ID is an innovative line-marking system allowing you to identify your lines at a glance. Wonder if a shooting head is 200 grain or a 300? Just look at the SA•ID. The SA•ID can be found on the first 1-2 feet of the tip section of your line.
