“17 mach 2”

Winchester's final WSM cartridge is arguably the best, but its acceptance by hunters has been lukewarm, which is unfortunate. It's a versatile round that's capable of taking most game animals worldwide.

Here’s a look at the seven best rimfire cartridges ever made. Some are standouts because of performance, while others make the cut based on groundbreaking innovation and longevity.

Although it has been largely forgotten by all but a dedicated faction of hunters, the .17 Mach 2 remains a first-rate option for small-game and varmint hunting.

Last year CCI released its .17 HMR load with the Speer VNT bullet; the polymer tip helps to retain velocity at further ranges, and the thin, frangible jacket gives near-explosive performance on game. For 2019, CCI has expanded the line with two new offerings: the .17 Mach 2 and the .22 WMR.

What follows is a primer on commercially available .17-caliber cartridges and their respective performance.

There is no doubt that the .17 WSM elevates rimfire ballistics to a new level. But will enough gun companies jump on board to produce rifles in this caliber?

Our annual survey highlights the year’s best ammunition and components—and you can see most of them under one roof at this year’s NRA Annual Meetings.