Scientific Anglers Mastery Grand Slam Fly Line – Saltwater Tropical Fly Fishing Line
Premier Express Same-Day Delivery
Premier Tackle offers Premier Express Same-Day Delivery for eligible orders within 40 miles of our Lakewood Ranch store. Most Express orders are delivered within approximately 2 hours.
Order by 3:00 PM — Guaranteed Same-Day Delivery
Place your eligible order by 3:00 PM Monday–Saturday and we'll deliver it that same day.
Ordering After 3:00 PM?
Same-day delivery may still be available after 3:00 PM depending on your location and delivery availability. If you need your order today, give the shop a call and we'll confirm availability.
Premier Express Delivery Rates
- 0–10 miles: $19.99 — FREE on orders $249+
- 10–20 miles: $29.99 — FREE on orders $299+
- 20–30 miles: $39.99 — FREE on orders $399+
- 30–40 miles: $54.99 — FREE on orders $499+
No Minimum Order
Need just one item? No problem. There is no minimum purchase required for Premier Express Same-Day Delivery.
When Same-Day Delivery Is Not Available
Orders placed after our same-day delivery window, on Sundays, or when Premier Express is otherwise unavailable will be prioritized for delivery the next business day.
Premier Express Same-Day Delivery is available for eligible in-stock items only. Final delivery availability and pricing are confirmed at checkout. Premier Tackle reserves the right to decline or reschedule delivery due to severe weather, safety concerns, or circumstances beyond our control. A valid local phone number is required for delivery.
Professional Line Spooling
Your reel can arrive ready to fish.
Not Sure What Line You Need? We'll Handle It.
After ordering your reel, call Premier Tackle and tell us how you plan to fish it. Our team will recommend the proper braid, mono backing and leader for your setup.
We Determine How Much Line You Need
No need to figure out spool capacity or how much line to purchase. We'll determine the proper amount, professionally spool your reel, and send you a separate invoice for the line used.
Custom Rigging
We can add backing, braid and leader connections, including professional FG knots when appropriate.
Complimentary Professional Spooling
Professional spooling is complimentary when line is purchased from Premier Tackle.
Free Shipping on Orders $150+
Free Shipping on Eligible Orders $150+
Enjoy free standard shipping on eligible orders of $150 or more.
Free Rod Shipping
Eligible fishing rods over $150 ship FREE. No oversized rod shipping charge on qualifying rods.
Oversized & Excluded Items
A small number of oversized or excluded products may not qualify for free shipping. Any applicable shipping charges will be shown at checkout.
Questions About Shipping?
Contact Premier Tackle before ordering and we'll be happy to help with shipping questions for your specific item.
Built for serious saltwater fly anglers chasing powerful gamefish in demanding conditions, the Scientific Anglers Mastery Grand Slam Fly Line delivers the casting power, quick-loading performance, and durability needed for success along Florida’s Gulf Coast and tropical fisheries worldwide.
Designed with an aggressive saltwater taper and Scientific Anglers’ proven AST slickness technology, the Mastery Grand Slam loads quickly, turns over large flies with ease, and excels in windy conditions where fast, accurate presentations matter most.
Aggressive Saltwater Taper
- Powerful front taper designed for turning over large flies and long leaders
- Loads rods quickly for fast shots at moving fish
- Excellent line control and casting stability
- Performs exceptionally well in windy saltwater conditions
Built for Tropical Saltwater Fishing
- Designed specifically for warm-water and tropical environments
- Core and coating remain stiff and slick in heat and humidity
- Excellent shooting ability for longer casts
- Durable construction for harsh saltwater conditions
AST Slickness Technology
- Advanced slick coating improves shooting distance and line control
- Reduces friction through guides for smoother performance
- Helps maintain long-term durability and handling
- Consistent performance through extended use
Versatile Saltwater Applications
- Excellent for flats, beaches, passes, and coastal structure
- Built for quick presentations to cruising fish
- Handles larger baitfish patterns and bulky flies with ease
- Balanced for both short shots and long-distance casting
Ideal For
- Tarpon
- Snook
- Redfish
- Permit
- Bonefish
- General tropical saltwater fly fishing
Why It Works on the Gulf Coast
Gulf Coast fly fishing often requires fast casts, strong turnover, and reliable performance in heat and wind. The Mastery Grand Slam is built to handle aggressive saltwater conditions while maintaining the control and accuracy serious anglers demand.
Premier Tackle Insight
We carry what works—and the Mastery Grand Slam is one of the most trusted saltwater fly lines Scientific Anglers has ever produced. If you want a dependable tropical fly line that excels in real-world saltwater conditions, this is a proven choice.
Available now at Premier Tackle, serving anglers in Bradenton, Lakewood Ranch, Sarasota, and across Florida’s Gulf Coast.
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WF-7-F, WF-8-F, WF-9-F, WF-10-F |
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