Vihtavuoris N550 rifle powder was originally developed for .30-06 Springfield and .308 Win. calibers in the late 90s. The N550 is an ideal fit for many of the 30 caliber magnums with lighter bullets, but also useful across a wide range of bore sizes in various shooting disciplines. It is an excellent powder for .30-06 Springfield hunting rounds with heavier bullets, and also for other more powerful loads of 6,555 SE, .308 Winchester plus many others.

The N550 is tubular powder type with symmetrical grain dimensions of 1,0 mm length and 1,0 mm diameter. As with all of our N500 series powders, nitroglycerine has been added to the traditional single base powder to get better energy content. The burning rate of N550 is similar to that of the N150 rifle powder and its on the medium scale of our high energy powders. Higher velocity is acquired with equal pressure compared to the N100 series without increased wear on the rifle!

IMPORTANT ORDERING INFORMATION: If you would like Nitro Powder delivered to you, we will require proof that you hold a valid Firearm or Shotgun Certificate before you place your order on our website. A shipping quote will be generated for you after you enter your postcode. For more information, read our blog - How To Order Nitro Powder.

IMPORTANT COLLECTION INFORMATION: If you are planning on collecting Nitro Powder from us, you must call us on 0113 256 9163 or email us to reserve your powder at least 48 hours in advance of collection. Failure to do this may result in the powder you are looking for being unavailable when you visit, even if the item is listed as in stock on our website. Remember to bring your Firearms or Shotgun Licence when collecting your Nitro Powder.

Please note - We require you to upload a copy of the first page of your Firearm/Shotgun Certificate to purchase Nitro Powder on our website.

Your delivery address must match the address on your Firearm/Shotgun Certificate.