History
Hornady introduced the 7mm PRC in 2022 and standardized it with SAAMI the same year, completing the family that began with the 6.5 PRC and the .300 PRC. The recipe matches its siblings: a beltless case, a sharp shoulder for repeatable headspace, and a long throat that lets a heavy, high-BC bullet sit out in the air instead of buried in powder.
The 7mm bore is the sweet spot. A 180-grain match bullet at PRC velocities carries a very high ballistic coefficient without the recoil of a .30 magnum, and long-range hunters and precision shooters took to it fast for delivering .28 Nosler-class performance in a standardized, factory-supported round.
Lineage
The case head is the beltless .532 inch design shared across the PRC line and the .375 Ruger family it descends from. It headspaces on a 30-degree shoulder, pushes a 7mm (.284 inch) bullet, and runs in a standard-length action. In the family it sits between the 6.5 PRC and the .300 PRC, and it competes with the older 7mm Remington Magnum and the wildcat-derived 28 Nosler, trading their belt or their proprietary nature for a clean shoulder-headspaced design.
Specifications
| Spec | Value |
|---|---|
| Case type | Rimless, bottlenecked (beltless magnum) |
| Bullet diameter | 7.21 mm (.284 in) |
| Neck diameter | 8.05 mm (.317 in) |
| Base diameter | 13.51 mm (.532 in) |
| Rim diameter | 13.51 mm (.532 in) |
| Case length | 57.91 mm (2.280 in) |
| Overall length | 84.84 mm (3.340 in) |
| Case capacity | ~82 gr H2O (nominal; varies by brand) |
| Primer size | Large rifle magnum |
| Belted | No |
| Rifling twist | 1 in 8 in (SAAMI standard) |
| Max pressure | 65,000 psi (SAAMI) |
| Recommended barrel | 28 in, 1:8 twist |
Barrel Design
The 1:8 twist is not a number to second-guess. The heavy 180-grain match bullets are long for caliber and need that fast twist to stay stable into the transonic range at distance. A 1:8 holds them with margin and leaves room for the heaviest 190-grain class bullets above them.
Barrel length matters here. The slow powders that fill the case keep adding velocity well past where a short-action 7mm would taper off, and a longer tube also tends to tighten standard deviation on match loads, which matters more than raw speed once you are dialing past 1,000 yards.
For the long-range mission this site is built around, the baseline is 28 inches, which captures nearly all of the available velocity in a barrel that still handles. A hunter who carries the rifle can drop to 24 inches and trade a modest amount of speed for a lighter, quicker package. The tables below are computed at the 28 inch recommended barrel.
Match Ammo Performance
Hornady Match · 180 gr ELD Match $1.53/rd
| Range (yd) | Velocity (fps) | Elevation (mil) | Energy (ft-lb) | Windage (mil) |
|---|---|---|---|---|
| 0 | 3063 | -0.3 | 3749 | 0.2 |
| 100 | 2949 | 0.0 | 3476 | 0.1 |
| 200 | 2837 | -0.3 | 3217 | 0.2 |
| 300 | 2727 | -0.8 | 2973 | 0.4 |
| 400 | 2620 | -1.4 | 2743 | 0.5 |
| 500 | 2515 | -2.0 | 2527 | 0.6 |
| 600 | 2412 | -2.7 | 2325 | 0.8 |
| 700 | 2312 | -3.4 | 2136 | 0.9 |
| 800 | 2214 | -4.2 | 1959 | 1.1 |
| 900 | 2119 | -5.0 | 1794 | 1.2 |
| 1000 | 2026 | -5.9 | 1640 | 1.4 |
| 1100 | 1935 | -6.9 | 1497 | 1.6 |
| 1200 | 1846 | -7.9 | 1362 | 1.7 |
| 1300 | 1759 | -8.9 | 1237 | 1.9 |
| 1400 | 1674 | -10.1 | 1120 | 2.1 |
| 1500 | 1591 | -11.3 | 1011 | 2.4 |
| 1600 | 1509 | -12.6 | 910 | 2.6 |
| 1700 | 1430 | -14.0 | 817 | 2.8 |
| 1800 | 1352 | -15.6 | 731 | 3.1 |
| 1900 | 1277 | -17.2 | 652 | 3.4 |
| 2000 | 1205 | -19.0 | 581 | 3.7 |
| 2100 | 1138 | -20.9 | 517 | 4.0 |
| 2200 | 1090 | -23.0 | 475 | 4.3 |
| 2300 | 1060 | -25.3 | 449 | 4.6 |
| 2400 | 1036 | -27.8 | 429 | 5.0 |
| 2500 | 1015 | -30.4 | 412 | 5.3 |
| 2600 | 996 | -33.2 | 396 | 5.6 |
Muzzle velocity 3063 fps is estimated at 28 in from the 24 in factory figure of 2975 fps at about 22 fps per inch. Expect your own barrel to read a little differently. Velocity is color coded green supersonic, yellow transonic, red subsonic; treat transonic and subsonic rows as approximate.
Trajectory
FAQ
What barrel length and twist should I run?
A 1:8 twist is the standard, and it is the right call: it stabilizes the heavy 180-grain match bullets that make the 7mm PRC worth shooting, with margin to spare. For barrel length, 28 inches captures the cartridge's velocity for long range; hunters can run 24 inches for a handier rifle.
Is the 7mm PRC belted?
No. Like the rest of the PRC family it headspaces on its shoulder, even though it uses the wide .532 inch case head of the old belted magnums. The beltless design gives more consistent headspace and easier precision handloading.
How does it compare to the 7mm Remington Magnum?
The 7mm PRC runs at higher pressure, headspaces on its shoulder instead of a belt, and has a longer throat built for today's heavy high-BC bullets. The result is meaningfully better long-range performance with factory match ammunition, though it needs a slightly longer action and more recoil.
What is the 7mm PRC good for?
Long-range hunting and precision shooting where a high-BC 7mm bullet and manageable recoil matter. It delivers .30-magnum trajectory and wind resistance with noticeably less recoil.