Scientific Anglers Magnitude Smooth Grand Slam Fly Line - Clear Floating Saltwater WF-10-F

Scientific Anglers Magnitude Smooth Grand Slam introduces a new standard for saltwater fly line performance, combining stealth, durability, and slickness in a clear floating profile. The full-clear construction helps the line stay nearly invisible on the water, aiding confident tracking in bright sun or clear water. This translates to more natural presentations and consistent line control without changing your approach.

Key innovations that matter on the water

The line features a Duracoat dual-polymer shell designed to resist wear while maintaining a slick feel cast after cast. An EST+ Slickness additive keeps the line gliding smoothly through guides and across the water during longer casts, reducing friction and helping you deliver your next cast with confidence. The combination of these elements supports a durable, predictable shooting line that performs when it matters most.

• Full-clear stealth design for low-visibility floating performance and confident tracking
• Duracoat dual-polymer shell built to resist abrasion and stay slick over time
• Overweighted quick-load taper that loads fast, punches into wind, and turns over bigger flies
• EST+ Slickness treatment that preserves smoothness for longer casts and easier line pickup
• Short, powerful head for rapid turnover on moving targets
• Naturally buoyant polymers that float high while remaining nearly invisible
• All-clear floating body that stays stealthy while riding in chop

Designed for real-world use

In saltwater settings, visibility, wear resistance, and line management are practical concerns. Magnitude Smooth Grand Slam is crafted to address these realities, offering a balanced blend of visibility, flotation, and control that translates to a more intuitive fishing experience. The line’s architecture is designed to hold a steady, high float while remaining unobtrusive, which helps you keep the shoot and the turn-over smooth even when conditions shift.

• Perfect for long casts to wary game while maintaining a discreet presence
• Steady flotation that stays high even in surface chop for better line management
• Robust construction that withstands the rhythm of saltwater casting and retrieves

What you can expect on the water

While every fishing day is different, you may notice quicker loading, reliable turnover with larger flies, and a consistently smooth feel from lift-off to target. Pair Magnitude Grand Slam with your preferred reel and leader setup to tailor your presentation to the moment, whether you’re casting to cruising fish or working moving targets along rip lines.

Note: benefits described are based on design intent and field performance indicators. Results can vary with technique, conditions, and gear configuration. This description emphasizes practical traits to consider when choosing a line for saltwater fishing.