17 WSM ammo

.17 WSM ammo — the .17 Winchester Super Magnum — is the fastest rimfire cartridge ever made, launching a tiny 20-grain bullet at around 3,000 fps for flat-shooting, explosive performance on varmints and small predators out past 200 yards. Introduced in 2013, the .17 WSM pushed rimfire velocity into territory once reserved for centerfire varmint rounds, giving rimfire shooters genuine reach. This page covers what it does, the availability question, and how it compares. It’s part of our full rimfire ammunition selection at Tatted Tacticals.

Tatted Tacticals stocks .17 WSM from Winchester, Hornady, and others — polymer-tip and hollow-point varmint loads in 20- and 25-grain bullets, by the box.

The Fastest Rimfire

The .17 WSM fires a .17-caliber, 20-grain bullet at roughly 3,000 fps — faster than any other rimfire, and well beyond the .17 HMR and .22 WMR. That velocity delivers a flat trajectory and dramatic expansion on varmints, extending effective rimfire range to 200-plus yards. It bridges the gap between rimfire economy and centerfire reach, making it a standout for prairie dogs, ground squirrels, and predators. Recoil is negligible and report modest. Our .17 WSM ballistic guide covers the numbers.

.17 WSM and the Availability Question

The .17 WSM’s main challenge has been supply. With a limited number of manufacturers producing it, availability has been inconsistent over the years, leading some to question its future — but it remains in production and available, especially online. When you find it, buying a supply is wise. Compared to the .17 HMR, the WSM is faster and flatter but less widely stocked; the HMR is more available but shorter-ranged. For maximum rimfire reach, the WSM leads. Standards follow SAAMI specifications.

Buying .17 WSM

Buy a supply when you find it, given periodic availability gaps. Federal law sets the minimum age for rimfire ammunition at 18; some states and cities add restrictions, so per ATF guidance, confirm federal rules and review our ammunition shipping rules and state restrictions before ordering.

.17 WSM Ammo — Frequently Asked Questions

Is .17 WSM ammo still being made?

Yes. Despite periodic supply concerns, the .17 WSM remains in production from Winchester, Hornady, and others, and is available especially online. A limited number of manufacturers has made availability inconsistent at times, but the cartridge is not discontinued. When you find it in stock, buying a supply is a good idea to ride out any availability gaps.

Why is .17 WSM ammo hard to find?

The .17 WSM is produced by relatively few manufacturers, so supply can be inconsistent — production interruptions or surges in demand thin shelves periodically. It’s a niche, specialized rimfire, which limits how many makers produce it. The practical response is to buy a supply when you find it in stock. Online retailers are typically the best source for current availability.

What is the effective range of .17 WSM?

The .17 WSM is effective on varmints out to about 200 yards and somewhat beyond under good conditions — exceptional reach for a rimfire. Its high velocity gives it a flat trajectory within that window, though its light bullet is wind-sensitive at distance. For rimfire varmint hunting at extended range, the .17 WSM offers the longest effective reach of any rimfire cartridge.

Is the .17 WSM better than the .17 HMR?

For reach, yes — the .17 WSM is faster and flatter-shooting than the .17 HMR, extending effective range further. The HMR’s advantage is wider availability and lower cost. If maximum rimfire velocity and range are the priority, the WSM wins; if availability and economy matter more, the HMR is easier to source. Both are excellent flat-shooting rimfire varmint rounds.

Can you buy .17 WSM ammo online?

Yes. In most U.S. states you can buy .17 WSM online and have it shipped to your door — usually the best source given periodic availability gaps. The minimum age for rimfire ammunition is 18, and some states and municipalities add restrictions or shipping limits, so confirm your state and local laws before ordering.