Vihtavuori N540 Smokeless Gun Powder: Universal Rifle Powder for .223 Rem, .308 Win & 30-06 Springfield

Vihtavuori N540 is a universal N500-series rifle powder for a wide variety of medium-sized calibers, suitable for both hunting and target shooting. It’s an excellent choice for cartridges running from .223 Remington/5.56mm (with heavier bullets) up through .308 Winchester and .30-06 Springfield.

Built for Medium-Case Versatility

N540 uses a tubular extruded grain with a symmetrical 1.0mm length by 1.0mm diameter, which meters cleanly and consistently through reloading equipment. As part of Vihtavuori’s N500 series, N540 carries extra energy content that Vihtavuori states can deliver up to 30-40 m/s higher velocity at the same pressure level compared to an equivalent N100-series powder — worth trying when using heavier bullets or when higher loading densities and muzzle velocities are needed. Vihtavuori’s production process controls the full chain from nitrocellulose manufacture to final bottling, giving the lot-to-lot consistency reloaders need for repeatable results.

Application Versatility

N540 has official published load data for .223 Remington (specifically heavy bullets from 69 to 82 grains), .308 Winchester, .30-06 Springfield, 6.5 Creedmoor, 6.5×47 Lapua, and .300 WSM, among 47 total cartridges. If you’re loading small-case cartridges like .222 Rem or .223 Rem with standard-weight bullets, Vihtavuori’s N100-series powders (N120, N130) are worth comparing.

Load Development

Always use published, manufacturer-tested load data when developing loads with N540. 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: Tubular extruded rifle powder, N500 series (fastest-burning of the current N500 lineup), symmetrical 1.0mm x 1.0mm grain
• Manufacturer: Vihtavuori (Finland)
• Best for: .223 Remington (heavy bullets), .308 Winchester, .30-06 Springfield, 6.5 Creedmoor, 6.5×47 Lapua, .300 WSM
• 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 N540 in its original, sealed container in a cool, dry, well-ventilated place away from sunlight and heat sources.

Vihtavuori N540 For Sale, In Stock

USReloadingPowder keeps Vihtavuori N540 Smokeless Gun Powder in stock for medium-case rifle hunters and target shooters. Browse the rest of our lineup on the Vihtavuori Powders category page.

FAQs

What cartridges is N540 best for? It has official published load data for .223 Remington (heavy 69-82gr bullets), .308 Winchester, .30-06 Springfield, 6.5 Creedmoor, 6.5×47 Lapua, and .300 WSM, among 47 total cartridges.

Is N540 a spherical (ball) powder? No. N540 uses a tubular extruded grain, not a spherical ball powder.

Does the N500 series really give higher velocity than N100-series powders? Vihtavuori states its N500-series powders carry extra energy content that can deliver up to 30-40 m/s higher velocity at the same pressure level compared to an equivalent N100-series powder — this is manufacturer-published data for the series as a whole.

How should I store it long-term? Keep it sealed in its original container, stored in a cool, dry, ventilated location away from heat and sunlight. Proper storage keeps powder stable for years.