.17 Winchester Super Magnum

The Winchester Super Magnum is one of the few popular rimfire cartridges that continue to have a place in today’s ammunition market. The .17 WSM takes the .17 HMR to a new level.

History of the .17 WSM

The .17 Winchester Super Magnum was created in 2012 by Winchester and Savage Arms. It was released at the 2013 Shot Show in Las Vegas.

While being a new round to the ammunition market, it still has made a splash and some gun manufacturers have signed on to make guns for the 17 WSM.

Purpose of the .17 Winchester Super Magnum

The purpose of this round is somewhat disputed but one thing that isn’t disputed is the fact the round is the fastest rimfire round in the world.

I’m a huge fan of rimfire, growing up on .22LR anything in the rimfire world is fun and piques my interest.

Performance

This cartridge should really be called the 17 Winchester Performance Magnum because that’s exactly what it delivers.

Let us dive into what makes this cartilage so special.

The two most common calibers this round is compared to are the 17 HMR and the 22 Hornet.

The velocity of the WSM is what sets it apart from the 17 HMR and the 22 Hornet

Cartridge	Muzzle Velocity	50 Yards	100 Yards	250 Yards
17 HMR	2,550	2,197 ft/s	1,885 ft/s	1,175 ft/s
22 Hornet	2,690	2,337 ft/s	2,026 ft/s	1,278 ft/s
17 WSM	3,000	2,729 ft/s	2,487 ft/s	1,838 ft/s

The next metric that you’d look at is the energy on target that the 22 WSM delivers.

Cartridge	Muzzle Energy	50 Yards	100 Yards	250 Yards
17 HMR	245 ft/lbs	182 ft/lbs	134 ft/lbs	52 ft/lbs
22 Hornet	723 ft/lbs	546 ft/lbs	410 ft/lbs	163 ft/lbs
17 WSM	400 ft/lbs	331 ft/lbs	275 ft/lbs	150 ft/lbs

As you can see from this handy chart, the 22 Hornet is the clear victor on muzzle energy but the difference is that the 17 WSM shoots much flatter than the 22 Hornet.

The drop on the 22 Hornet at 250 yards is 12.7 inches, yes, you read that right over a foot of drop. Compare that to the 17 WSM at 250 yards of 7.2 inches of drop.

The most common grain weights for the 17 Win Super Mag are 20 Grain and 25 Grain.

Guns that Shoot 17 Win Super Mag

Most of the guns that shoot this round are bolt-action rifles. We will sneak one semi-auto rifle into this list but finding it might be a task.

Franklin Armory F17

While hard to find the Franklin Armory F17 is the only semi-auto 17 Winchester Super Mag available today.

You may have difficulty finding the exact F17 you’re looking for, but they are floating around.

You may be able to find them on Guns.com or Gun Broker.

Savage Arms B.MAG

The Savage Arms B.Mag rifle was designed just for the 17 Win Super Mag cartridge.

It has many of the same Savage Arms technology, like the AccuTrigger, packed into this compact action rifle.

The gun features a center-feed rotary magazine that holds 8 roughs.

The rifle also sports a rugged synthetic stock with a blued barrel and rubber recoil bad on the rifle’s stock.

17 Super Magnum Ammo

The 17 WSM round is available from many companies, including Winchester, Federal, and Hornady.

Price

As with most rimfire rifle rounds, this cartridge is highly affordable, so it’s extremely practical.

The price per round is in the neighborhood of $0.21-0.30 /per round. For a cartridge with this kind of performance, this really isn’t a bad price.

The only downside is the number of companies currently making rifles chambered in .17WSM and ammo availability as of this writing.

Availability

Finding this round can be difficult a quick search using AmmoSeek.com prompted no results.

However, many ammo retailers have several product pages that have since sold out.

Palmetto State Armory has one of the largest selections of 17 WSM if you can find it in stock. One of the top-rated ammo in this caliber is the Winchester Varmint-HV,

GrabAGun also has a decent selection when they have this cartridge in stock.

.17 WSM FAQ

Read more about other Winchester rounds, such as the 25 WSSM.