Published: December 2025 | Last updated: April 2026
The 7mm WSM (7mm Winchester Short Magnum) was introduced in 2001 by Winchester in partnership with Browning Arms Company, derived from the same short-fat case family as the 300 WSM and 270 WSM. The concept was straightforward: deliver 7mm Remington Magnum-class ballistics from a short-action rifle, allowing lighter and more compact rifles suited to mountain hunting without sacrificing downrange performance.
The 7mm WSM’s short, wide case produces excellent powder combustion efficiency from 23-24 inch barrels – in some barrel lengths it nearly matches the 7mm Remington Magnum in velocity while fitting a shorter, lighter action. Its natural competitor is the 7mm PRC, which uses a modern unbelted case with no belt and better accommodation of heavy high-BC bullets. The 7mm WSM’s advantage over the PRC is its established 20-year factory ammunition and component supply chain; the PRC’s advantage is modern case geometry and better heavy-bullet compatibility.
For reloading data, see the 7mm WSM complete guide. For comparisons, see 7mm WSM ballistics, 7mm PRC ballistics, and 7mm Remington Magnum ballistics.
Core Ballistic Parameters
| Load | MV | BC (G7) | Muzzle Energy |
|---|---|---|---|
| 140 gr Nosler AccuBond | 3,225 FPS | 0.268 | 3,235 ft-lbs |
| 150 gr Hornady ELD-X | 3,100 FPS | 0.315 | 3,202 ft-lbs |
| 160 gr Nosler AccuBond | 3,000 FPS | 0.330 | 3,197 ft-lbs |
| 175 gr Berger Elite Hunter | 2,900 FPS | 0.350 | 3,268 ft-lbs |
All data below uses a 200-yard zero, 1.5-inch sight height, 59°F, sea level, 24-inch barrel. The 7mm WSM is a magnum hunting cartridge – a 200-yard zero is the standard for open-country western hunting applications.
Bullet Drop (200-Yard Zero)
| Range (yards) | 140 gr AccuBond | 150 gr ELD-X | 160 gr AccuBond | 175 gr Berger |
|---|---|---|---|---|
| Muzzle | -1.5 | -1.5 | -1.5 | -1.5 |
| 100 | +1.6 | +1.7 | +1.8 | +1.9 |
| 200 | 0.0 | 0.0 | 0.0 | 0.0 |
| 300 | -5.8 | -6.2 | -6.5 | -7.0 |
| 400 | -16.5 | -17.5 | -18.5 | -19.8 |
| 500 | -32.5 | -34.5 | -36.5 | -39.0 |
| 600 | -55.0 | -58.2 | -61.5 | -65.5 |
| 700 | -84.5 | -89.5 | -94.5 | -100.5 |
| 800 | -122.5 | -130.0 | -137.0 | -145.5 |
| 900 | -170.5 | -181.5 | -190.5 | -202.5 |
| 1,000 | -230.5 | -245.0 | -256.5 | -272.5 |
Drop in inches. Positive values = above line of sight.
The 7mm WSM’s trajectory from a 200-yard zero is competitive with any standard production 7mm cartridge. At 300 yards the 140-grain AccuBond is only 5.8 inches low – inside the vital zone depth of a deer or elk on a broadside shot. At 500 yards it reaches 32.5 inches, requiring dialed turrets but still manageable for skilled hunters with confirmed range.
The BC crossover between the 140-grain AccuBond and the 175-grain Berger occurs at approximately 550-575 yards. The AccuBond starts 325 FPS faster and shoots flatter inside that distance; past 575 yards the Berger’s G7 BC of 0.350 produces progressively better trajectory. At 1,000 yards the Berger drops 42 fewer inches than the AccuBond despite starting 325 FPS slower.
Compared to the 7mm Remington Magnum – the natural historical comparison – the 7mm WSM produces nearly identical trajectory with equivalent bullet weights and velocities. The WSM’s short-fat case achieves comparable velocity with slightly less powder, but the downrange numbers are essentially the same.
Wind Drift – 10 MPH Full-Value Crosswind
| Range (yards) | 140 gr AccuBond | 150 gr ELD-X | 160 gr AccuBond | 175 gr Berger |
|---|---|---|---|---|
| 100 | 0.6 | 0.6 | 0.6 | 0.5 |
| 200 | 2.5 | 2.3 | 2.2 | 2.1 |
| 300 | 5.8 | 5.4 | 5.1 | 4.8 |
| 400 | 10.5 | 9.7 | 9.2 | 8.6 |
| 500 | 16.8 | 15.5 | 14.6 | 13.6 |
| 600 | 24.5 | 22.6 | 21.2 | 19.7 |
| 700 | 33.8 | 31.1 | 29.1 | 27.0 |
| 800 | 45.2 | 41.5 | 38.7 | 35.8 |
| 900 | 58.5 | 53.6 | 50.0 | 46.2 |
| 1,000 | 74.0 | 67.8 | 63.0 | 58.2 |
Drift in inches. Half-value crosswind = divide by 2.
The 175-grain Berger drifts 15.8 fewer inches than the 140-grain AccuBond at 1,000 yards – the BC difference (G7: 0.350 vs 0.268) compounding across distance. At 600 yards the gap is 4.8 inches – nearly half a deer’s vital zone width in a 10 MPH crosswind. For open-country mule deer and elk hunting where afternoon mountain winds are unpredictable, that BC advantage translates directly to confidence.
At 400 yards in a 10 MPH crosswind, all four loads drift 8.6-10.5 inches – inside an elk’s 10-inch vital zone for broadside shots with accurate wind reading. At 500 yards the 175-grain Berger drifts 13.6 inches – manageable with precise wind estimation but leaving less margin for error.
Velocity Retention
| Range (yards) | 140 gr AccuBond | 150 gr ELD-X | 160 gr AccuBond | 175 gr Berger |
|---|---|---|---|---|
| Muzzle | 3,225 | 3,100 | 3,000 | 2,900 |
| 200 | 2,908 | 2,831 | 2,756 | 2,692 |
| 400 | 2,605 | 2,576 | 2,523 | 2,494 |
| 600 | 2,317 | 2,333 | 2,302 | 2,305 |
| 700 | 2,178 | 2,215 | 2,193 | 2,201 |
| 800 | 2,044 | 2,100 | 2,087 | 2,100 |
| 900 | 1,915 | 1,988 | 1,984 | 2,001 |
| 1,000 | 1,792 | 1,879 | 1,884 | 1,905 |
| 1,100 | 1,674 | 1,774 | 1,787 | 1,812 |
| 1,200 | 1,562 | 1,672 | 1,694 | 1,722 |
Velocity in FPS. Supersonic threshold approximately 1,340 FPS at sea level.
The velocity crossover is the defining characteristic of this table. The 140-grain AccuBond starts at 3,225 FPS – 325 FPS faster than the 175-grain Berger – yet by 600 yards both are at essentially the same velocity (2,317 vs 2,305 FPS). By 800 yards the Berger at 2,100 FPS has matched the AccuBond at 2,044 FPS. By 1,000 yards the Berger leads by 113 FPS (1,905 vs 1,792 FPS) despite starting 325 FPS slower.
This crossover defines the practical load selection. Inside 600 yards the AccuBond’s velocity advantage produces flatter trajectory; past 600 yards the Berger’s BC advantage delivers better retained velocity, energy, and wind resistance. For an elk hunter who typically shoots inside 500 yards but occasionally stretches to 600-700, the AccuBond’s flatter trajectory simplifies the common shots while being slightly disadvantaged at the occasional extended range. For a dedicated open-country hunter who regularly engages at 500-700 yards, the Berger’s BC is the clear choice.
All four loads remain well above transonic past 1,200 yards. The 140-grain AccuBond at 1,562 FPS at 1,200 yards has 222 FPS of supersonic margin; the Berger at 1,722 FPS has 382 FPS.
For hunting: the 1,800 FPS expansion threshold for standard bonded hunting bullets is crossed at approximately 900-925 yards for the AccuBond; approximately 950-975 yards for the ELD-X; approximately 975-1,000 yards for the 160-grain AccuBond; past 1,000 yards for the Berger. These confirm the 7mm WSM’s legitimate 900+ yard hunting capability when shooter skill and field conditions support it.
Energy Retention
| Range (yards) | 140 gr AccuBond | 150 gr ELD-X | 160 gr AccuBond | 175 gr Berger |
|---|---|---|---|---|
| Muzzle | 3,235 | 3,202 | 3,197 | 3,268 |
| 200 | 2,635 | 2,669 | 2,700 | 2,821 |
| 400 | 2,108 | 2,212 | 2,260 | 2,417 |
| 500 | 1,891 | 2,018 | 2,073 | 2,228 |
| 600 | 1,664 | 1,812 | 1,883 | 2,065 |
| 700 | 1,473 | 1,633 | 1,713 | 1,887 |
| 800 | 1,299 | 1,469 | 1,548 | 1,714 |
| 900 | 1,139 | 1,316 | 1,397 | 1,554 |
| 1,000 | 997 | 1,174 | 1,263 | 1,410 |
Energy in ft-lbs.
The energy table establishes the 7mm WSM’s honest hunting range. For elk (1,500 ft-lbs threshold), the 140-grain AccuBond crosses below that mark at approximately 555-565 yards; the 150-grain ELD-X at approximately 625-635 yards; the 160-grain AccuBond at approximately 650-665 yards; the 175-grain Berger past 700 yards.
The 7mm WSM with heavy high-BC bullets is a legitimate 700-yard elk cartridge by the energy standard – extending the usable elk range approximately 100 yards beyond the 7mm Remington Magnum with equivalent bullet weights due to its slightly higher starting velocity with the short-fat case.
For deer (1,000 ft-lbs threshold), all four loads maintain deer-adequate energy past 950 yards. The 175-grain Berger holds above 1,000 ft-lbs past 1,000 yards with comfortable margin – the 7mm WSM is a genuine long-range deer cartridge.
Terminal Performance Profiles
Hornady ELD-X 150 gr
Construction: Polymer tip with Heat Shield to prevent tip deformation in flight, bonded copper jacket to lead core. At the 7mm WSM’s 3,100 FPS starting velocity, the bonded construction is directly relevant – standard cup-and-core bullets at this velocity can experience premature core-jacket separation at close-range shots through heavy bone.
Terminal behavior: Expands to 0.48-0.60 inches with 90-95% weight retention. At 3,100 FPS close-range impact, the bonded core maintains integrity through rapid expansion. Penetration in elk-sized tissue: 18-24 inches. At 500 yards where velocity drops to approximately 2,333 FPS, expansion is controlled and consistent. The ELD-X expands reliably to approximately 1,600 FPS – past 950 yards in the 7mm WSM.
Hunting application: The 7mm WSM’s primary factory hunting reference for deer through elk. Energy above 1,500 ft-lbs to approximately 625-635 yards for elk; above 1,000 ft-lbs past 900 yards for deer. For hunters who want verified factory Hornady Precision Hunter performance data from a single load covering all western hunting distances, the 150-grain ELD-X is the answer.
More details: Hornady ELD-X bullet profile
Nosler AccuBond 140 gr
Construction: Bonded polymer-tipped bullet. The lightest standard hunting load for the 7mm WSM – the highest velocity and flattest trajectory of the five loads.
Terminal behavior: Expands to 0.48-0.58 inches with 65-70% weight retention. At 3,225 FPS the bonded construction handles the high velocity without core-jacket separation. Penetration in elk-sized tissue: 16-22 inches. At 400 yards where velocity drops to approximately 2,605 FPS, expansion is more controlled. Expansion remains reliable to approximately 1,800 FPS – approximately 900-925 yards.
Hunting application: Deer and antelope inside 555-565 yards where energy exceeds 1,500 ft-lbs for elk on clean shots; the flattest trajectory of the four loads inside 500 yards makes it practical for pronghorn and mule deer at unknown distances in open terrain. At 300 yards from a 200-yard zero it drops only 5.8 inches – the simplest holdover of the four loads for typical hunting distances.
More details: Nosler AccuBond bullet profile
Nosler AccuBond 160 gr
Construction: Same AccuBond bonded construction in the all-around balance point for the 7mm WSM – more energy than the 140-grain at distance, less wind sensitivity, better elk performance.
Terminal behavior: Expands to 0.50-0.62 inches with 65-70% weight retention. At 3,000 FPS the AccuBond expansion is reliable from close range through extended range. Penetration in elk-sized tissue: 18-24 inches. At 500 yards where velocity drops to approximately 2,523 FPS, expansion is consistent and controlled.
Hunting application: The 7mm WSM’s best all-around hunting load for deer through elk at any practical hunting distance. Energy above 1,500 ft-lbs to approximately 650-665 yards for elk; above 1,000 ft-lbs past 950 yards for deer. The 160-grain AccuBond covers everything from close timber shots to 600-yard mountain elk with consistent bonded terminal performance.
More details: Nosler AccuBond bullet profile
Berger Elite Hunter 175 gr
Construction: Hybrid ogive hunting bullet with highest G7 BC of the four loads (0.350). Uses controlled fragmentation – jacket fails at 2-3 inches of penetration, creating a large temporary cavity.
Terminal behavior: Penetrates 2-3 inches before jacket failure creates a large wound cavity. At 2,900 FPS the fragmentation mechanism is dramatic at close range. At 600 yards where velocity drops to approximately 2,305 FPS, fragmentation is still reliable and effective on elk. At 700-800 yards (approximately 2,100-2,200 FPS), fragmentation becomes less explosive but the heavy bullet continues to penetrate adequately. Penetration in elk-sized tissue: 14-22 inches depending on distance.
Hunting application: Deer and elk inside 700 yards where energy exceeds 1,500 ft-lbs with the best wind performance of the four loads. The Berger’s G7 BC of 0.350 produces the lowest wind drift of the group – 15.8 fewer inches at 1,000 yards than the 140-grain AccuBond. For open-country elk hunters who regularly engage at 500-700 yards in variable mountain wind, this load extracts the most from the 7mm WSM platform.
More details: Berger Elite Hunter bullet profile
Nosler Partition 160 gr
Construction: Dual-core partitioned design – front core expands rapidly; partition retains the rear core for guaranteed minimum penetration depth regardless of shot angle or bone contact.
Terminal behavior: Front core mushrooms to 0.52-0.62 inches in the first 5-7 inches of tissue. Partition retains the rear core for 14-18 additional inches of penetration. Total penetration in elk-sized tissue: 20-26 inches. Weight retention 62-70%. The Partition exits on virtually all elk broadside shots and handles quartering-to shots through heavy shoulder muscle reliably.
Hunting application: Elk, moose, and black bear inside 500-525 yards where penetration reliability from any shot angle is the priority. Energy above 1,500 ft-lbs to approximately 565-575 yards. The Partition’s guaranteed rear-core penetration is specifically valuable in timber hunting where shots arrive unexpectedly from quartering-to angles. When shot angle cannot be guaranteed, the Partition handles what the AccuBond and ELD-X may not.
More details: Nosler Partition bullet profile
Practical Range Recommendations
Deer – any load inside 900+ yards. Energy above 1,000 ft-lbs to 950+ yards with all loads. A practical self-imposed 600-yard limit in field conditions accounts for wind uncertainty and shot placement pressure.
Elk – 150-grain ELD-X inside 625 yards; 160-grain AccuBond inside 650 yards; 175-grain Berger inside 700 yards; 140-grain AccuBond and 160-grain Partition inside 550-565 yards. The 7mm WSM is a legitimate 650-700 yard elk cartridge with the right load.
Moose – 160-grain AccuBond or Nosler Partition inside 450 yards on broadside shots. The 7mm WSM’s energy at 450 yards (approximately 2,100-2,200 ft-lbs) provides adequate moose-hunting authority with quality bonded bullets.
Bonded bullet requirement at close range: At 7mm WSM’s 2,900-3,225 FPS starting velocities, standard cup-and-core bullets can experience core-jacket separation at close-range impacts through heavy bone. Use only bonded (AccuBond, ELD-X), partitioned (Partition), or monolithic (Barnes TTSX) bullets for all hunting applications.
Frequently Asked Questions
How does the 7mm WSM compare to the 7mm Remington Magnum?
The 7mm Remington Magnum and 7mm WSM produce nearly identical ballistics with equivalent bullet weights – within 25-50 FPS in most comparisons. The 7mm WSM’s advantages are its short-action compatibility (lighter rifles) and slightly better case efficiency. The 7mm Remington Magnum’s advantages are its 60-year factory ammunition infrastructure and near-universal rifle availability. For hunters with existing 7mm Remington Magnum rifles, the WSM provides no meaningful performance improvement. For hunters choosing a new rifle where action length and weight matter, the WSM is the modern choice. See 7mm Remington Magnum ballistics for direct comparison.
How does the 7mm WSM compare to the 7mm PRC?
The 7mm PRC uses a modern unbelted case that better accommodates 175-180 grain high-BC bullets than the WSM’s belted case geometry. At 1,000 yards the 7mm PRC 180-grain ELD-M drifts approximately 65-67 inches versus the 7mm WSM 175-grain Berger at 58 inches – the WSM is actually competitive. The PRC’s advantage is its modern unbelted design and growing factory ammunition variety; the WSM’s advantage is 20+ years of established ammunition and component supply. For new purchases the 7mm PRC is the more modern design; for hunters with existing WSM rifles the ballistic argument for switching is marginal.
Is the 7mm WSM appropriate for elk?
Yes, inside 650-700 yards with appropriate bonded bullets. Energy with the 150-grain ELD-X above 1,500 ft-lbs to approximately 625-635 yards; the 175-grain Berger past 700 yards. Use bonded or partitioned bullets only – the ELD-X, AccuBond, or Partition – and limit shots to inside the load’s energy threshold. The 7mm WSM is a capable 600-yard elk cartridge that matches or slightly exceeds the 7mm Remington Magnum in usable range.
What barrel length is optimal for the 7mm WSM?
22-24 inches depending on application. The short-fat WSM case was optimized for 22-24 inch barrels – the primary advantage over the 7mm Remington Magnum’s preference for 24-26 inches. A 22-inch barrel loses approximately 30-50 FPS versus 24 inches. For mountain hunting where rifle weight matters, 22 inches is the practical choice. For maximum performance, 24 inches.
What powders work best in the 7mm WSM?
Hodgdon H4831SC and IMR 4831 are the standard accuracy references for the full 140-175 grain bullet weight range. Alliant Reloder 22 and Hodgdon H4350 produce excellent results with 140-160 grain bullets. IMR 4451 Enduron and Alliant Reloder 26 provide temperature-insensitive performance valued for hunting in varying conditions. See the 7mm WSM complete guide for specific charge data.
Is the 7mm WSM available in factory ammunition? Yes – Winchester, Hornady, Federal, and Nosler all produce 7mm WSM factory loads in 140-175 grain configurations. Selection is not as broad as the 7mm Remington Magnum but adequate for most hunting applications. Major sporting goods retailers typically stock 2-3 factory loads; online ordering opens the full selection.
Editorial note: This article was originally published in December 2025 and revised in April 2026.
