Accurate No. 11FS Smokeless Gun Powder: Flash-Suppressed Magnum Handgun Powder

Accurate No. 11FS is a double-base spherical magnum handgun powder with an added flash suppressant, built for full-power loads in large-frame revolvers and a handful of small-capacity rifle cartridges.

Built for Full-Power Magnum Loads

No. 11FS is a spherical (ball) powder formulated with a flash suppressant that noticeably reduces muzzle flash and signature, a feature that matters for low-light defensive shooting and hunting. On Accurate’s own relative burn rate chart, No. 11FS burns faster than other Accurate rifle powders like 2230, 2200, LT-30, and LT-32, placing it among the magnum handgun powders alongside powders like Winchester 296. Reloaders rely on No. 11FS for consistent ignition and metering in heavy magnum charges.

Application Versatility

No. 11FS has official published load data for magnum handgun cartridges including 22 TCM, .357 Magnum, .41 Remington Magnum, .44 Remington Magnum, .45 Colt (+P/high-pressure loads), .454 Casull, .460 S&W Magnum, .475 Linebaugh, .480 Ruger, and .500 S&W Magnum, as well as standard and subsonic loads in .300 AAC Blackout, its one small-capacity rifle application. If you need another magnum-focused Accurate powder to compare, Accurate No. 9 is worth a look.

Load Development

Always use published, manufacturer-tested load data when developing loads with No. 11FS. Start at the published minimum charge and work up in small increments, weigh every charge on a calibrated scale, and chronograph each string to track velocity consistency. Keep primer brand, bullet lot, and brass lot constant during development, watch for pressure signs, and document charge weight, seating depth, primer, and chronograph results so successful loads can be reproduced.

Quick Specs

• Type: Double-base spherical handgun powder with flash suppressant, fast-burning among magnum pistol powders
• Manufacturer: Accurate / Western Powders
• Best for: .357 Magnum, .41 Remington Magnum, .44 Remington Magnum, .45 Colt, .454 Casull, .460 S&W Magnum, .480 Ruger, .500 S&W Magnum, and .300 AAC Blackout
• Container sizes: 1 Lb, 8 Lb

Safety Reminders

Before loading, review a few important guidelines. Never exceed the loads displayed in your reloading guide. Never mix two powders together, regardless of type, brand, or source. Never substitute smokeless powder for Black Powder or any Black Powder substitute. Store No. 11FS in its original, sealed container in a cool, dry, well-ventilated place away from sunlight and heat sources.

Accurate No. 11FS For Sale, In Stock

USReloadingPowder keeps Accurate No. 11FS Smokeless Gun Powder in stock for magnum revolver shooters and .300 AAC Blackout reloaders who want flash-suppressed, consistent ignition. Browse the rest of our lineup on the Accurate Powders category page.

FAQs

What cartridges is No. 11FS best for? It has official published load data for magnum handgun cartridges including .357 Magnum, .41 Remington Magnum, .44 Remington Magnum, .45 Colt, .454 Casull, .460 S&W Magnum, .475 Linebaugh, .480 Ruger, 22 TCM, and .500 S&W Magnum, plus standard and subsonic .300 AAC Blackout rifle loads.

What does the “FS” in No. 11FS stand for? FS stands for Flash Suppressed — No. 11FS is formulated with a flash suppressant that reduces muzzle flash and signature.

Is No. 11FS a rifle or handgun powder? It’s primarily a magnum handgun powder, with one small-capacity rifle application in .300 AAC Blackout.

What container sizes does No. 11FS come in? Accurate No. 11FS is available in 1 Lb and 8 Lb containers.