7.5x55 Swiss

7.5×55 Swiss ammo — also called 7.5 Swiss or GP11 — is the cartridge of the legendary Swiss K31 straight-pull rifle, and one of the most accurate military rounds ever fielded. Swiss GP11 surplus is renowned for its precision and, unusually for military surplus, its non-corrosive priming, making the 7.5×55 a favorite of collectors and target shooters who appreciate a full-power cartridge with a reputation for fine accuracy. This page covers what it is and how it compares. It’s part of our full ammunition selection at Tatted Tacticals.

Tatted Tacticals stocks 7.5×55 Swiss from Prvi Partizan, RUAG, and others — full-power FMJ and soft-point hunting loads, by the box.

What the 7.5×55 Swiss Is

The 7.5×55 Swiss fires a .308-inch bullet, typically around 174 grains, at roughly 2,560 fps — performance comparable to the .308 Winchester and .30-06, making it a capable big-game cartridge as well as a target round. Its claim to fame is accuracy: the Swiss GP11 load and the K31 rifles built for it are famous for tight groups, a combination of quality ammunition and excellent rifles. Much GP11 surplus is also non-corrosive, a welcome rarity. Our 7.5×55 Swiss ballistic guide covers the numbers.

Surplus and Commercial Options

The 7.5×55 is available as both Swiss GP11 surplus — prized for accuracy and typically non-corrosive — and modern commercial ammo from Prvi Partizan and RUAG, including soft-point hunting loads. For hunting, choose commercial soft points; for target and collecting, GP11 surplus is the accurate classic. Shooters of other classic military calibers also browse the 8mm Mauser, .303 British, and 7mm Mauser. Standards follow SAAMI specifications.

Buying 7.5×55 Swiss

For hunting, choose commercial soft points; verify surplus is non-corrosive if cleaning is a concern. Federal law sets the minimum age for rifle 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.

7.5×55 Swiss Ammo — Frequently Asked Questions

Is 7.5×55 Swiss the same as 7.5 Swiss?

Yes. 7.5×55 Swiss, 7.5 Swiss, 7.5x55mm, and GP11 (the Swiss military load) all refer to the same cartridge used in the K31 and earlier Swiss service rifles. The various names reflect its Swiss military origin. Any rifle marked for one of these chambers the same cartridge, with GP11 specifically denoting the accurate Swiss military loading.

Is 7.5×55 Swiss surplus corrosive?

Unusually for military surplus, much Swiss GP11 ammunition is non-corrosive, a notable advantage over many other surplus rounds. This, combined with its excellent accuracy, makes GP11 especially prized. Always verify the specific lot, but Swiss surplus’s reputation for non-corrosive priming is part of what makes the 7.5×55 such a favorite among collectors and shooters.

What is 7.5×55 Swiss good for?

It’s an accurate full-power cartridge suited to target shooting, collecting, and big-game hunting. With performance comparable to the .308 and .30-06, it cleanly takes deer and elk with appropriate soft-point loads, while its renowned accuracy makes it a joy for target work. Paired with the excellent K31 rifle, it’s a precise, capable classic military cartridge.

Is the Swiss K31 accurate?

Yes — the K31 straight-pull rifle, paired with quality GP11 ammunition, is famous for exceptional accuracy, often outshooting other military surplus rifles of its era. The combination of a precise rifle and consistent ammunition gives the 7.5×55 Swiss its stellar accuracy reputation. It’s one of the reasons the cartridge and rifle remain so beloved by collectors and shooters.

Can you buy 7.5×55 Swiss ammo online?

Yes. In most U.S. states you can buy 7.5×55 Swiss online and have it shipped to your door, in both surplus GP11 and commercial loads. The minimum age for rifle ammunition is 18, and some states and municipalities add restrictions or shipping limits, so confirm your state and local laws before ordering.