Published: January 2026 | Last updated: May 2026
Disclaimer: Ballistic data in this article is drawn from Weatherby factory publications and established reloading references. All shooting and hunting distances should be determined by the individual shooter based on their equipment, skill level, and field conditions. Always confirm zero at the range before hunting season. For reloading data and cartridge history, see the 7mm Weatherby Magnum complete guide.
Roy Weatherby introduced the 7mm Weatherby Magnum in 1944 as part of his original lineup of high-velocity cartridges, derived from the blown-out belted H&H case necked to .284 inches. The result was a 7mm cartridge that pushed 160-grain bullets to 3,100 fps and 140-grain bullets past 3,300 fps – velocities that still exceed the 7mm Remington Magnum by 100 to 150 fps today, more than 80 years after Weatherby chambered his first rifle for it.
The cartridge fires .284-inch diameter bullets, the same bore as the 7mm Remington Magnum, 7mm PRC, 7mm WSM, and 7mm-08 Remington. At these velocities, cup-and-core and thin-jacketed bullets can fragment excessively at close range – the same practical consideration that applies to the 300 Weatherby Magnum and other extreme-velocity Weatherby cartridges. Bonded and monolithic bullets are strongly preferred for shots inside 150 yards on large or tough game. Weatherby’s distinctive double-radius shoulder design also means proprietary Weatherby brass is required for best accuracy and case life.
Like all overbore high-velocity cartridges, the 7mm Weatherby produces meaningful throat erosion. Barrel life typically runs 1,500 to 2,000 rounds before accuracy begins to degrade – appropriate for a dedicated hunting rifle but not a high-volume practice platform. For context on where the 7mm Weatherby fits among 7mm magnums, the 7mm Remington Magnum ballistics and 7mm WSM ballistics articles show how the Weatherby’s velocity advantage translates into field performance.
Core External Ballistics
The four loads used throughout this article represent the practical hunting weight range for the 7mm Weatherby Magnum. Muzzle velocities reflect Weatherby factory data from a 26-inch barrel; 24-inch barrels yield approximately 40 to 60 fps less.
| Load | Bullet Weight | MV (fps) | BC (G7) | Muzzle Energy (ft-lbs) |
|---|---|---|---|---|
| Hornady ELD-X | 140 gr | 3,303 | 0.248 | 3,390 |
| Nosler AccuBond | 150 gr | 3,200 | 0.261 | 3,413 |
| Sierra GameKing / Partition | 160 gr | 3,100 | 0.268 | 3,428 |
| Barnes TTSX / Nosler Partition | 175 gr | 2,975 | 0.289 | 3,441 |
The muzzle energy figures cluster tightly between 3,390 and 3,441 ft-lbs across all four loads – the higher mass of heavier bullets compensating for their lower velocity to produce nearly equivalent muzzle energy throughout the weight range. This mirrors the pattern seen in the 7×64 Brenneke and 280 Remington, though the Weatherby produces these figures at significantly higher velocity.
The 175-grain load has the highest G7 BC at 0.289 and produces the most muzzle energy at 3,441 ft-lbs. Its combination of mass and BC makes it the best energy-retention performer at distance, particularly for elk-class game beyond 500 yards.
Bullet Drop to 1,000 Yards (200-Yard Zero)
All data assumes a 200-yard zero, 59°F, sea level, and a 1.5-inch sight height.
| Range (Yards) | 140gr ELD-X (in) | 150gr AccuBond (in) | 160gr GameKing (in) | 175gr TTSX (in) |
|---|---|---|---|---|
| 100 | +1.5 | +1.6 | +1.7 | +1.8 |
| 200 | 0 | 0 | 0 | 0 |
| 300 | -6.9 | -7.3 | -7.8 | -8.5 |
| 400 | -19.8 | -21.0 | -22.5 | -24.4 |
| 500 | -39.8 | -42.2 | -45.2 | -49.0 |
| 600 | -67.5 | -71.9 | -77.0 | -83.5 |
| 700 | -105.0 | -111.8 | -119.8 | -130.0 |
| 800 | -153.0 | -163.5 | -175.3 | -190.5 |
| 900 | -214.0 | -229.0 | -245.8 | -267.5 |
| 1,000 | -290.0 | -310.5 | -333.5 | -363.5 |
With a 200-yard zero, the 7mm Weatherby’s trajectory holds within 2 inches of point of aim from the muzzle to approximately 258 yards with the 140-grain load – the widest no-holdover window in the 7mm magnum class. At 300 yards, corrections range from 6.9 to 8.5 inches – genuinely flat for a hunting cartridge, reflecting the Weatherby’s velocity advantage over the 7mm Remington Magnum.
The 140-grain ELD-X drops the least at every distance, driven by its higher starting velocity of 3,303 fps. At 500 yards it has dropped 39.8 inches versus 49.0 inches for the 175-grain TTSX – a 9.2-inch difference that represents a meaningfully different holdover requirement in the field. For open-country hunting where shots may extend past 400 yards, the lighter loads’ trajectory advantage is real and practical.
At 600 yards, corrections reach 67 to 84 inches depending on load. This is where precise ballistic data in the scope or a Kestrel becomes essential – guessing holdover at 600 yards with this spread produces 17 inches of vertical error between loads, more than enough to miss vitals entirely.
Wind Drift (10 mph Full-Value Crosswind)
| Range (Yards) | 140gr ELD-X (in) | 150gr AccuBond (in) | 160gr GameKing (in) | 175gr TTSX (in) |
|---|---|---|---|---|
| 100 | 0.5 | 0.5 | 0.5 | 0.4 |
| 200 | 2.1 | 2.1 | 2.0 | 1.9 |
| 300 | 4.9 | 4.9 | 4.7 | 4.4 |
| 400 | 8.9 | 8.9 | 8.6 | 7.9 |
| 500 | 14.3 | 14.2 | 13.7 | 12.6 |
| 600 | 21.1 | 21.0 | 20.2 | 18.5 |
| 700 | 29.4 | 29.3 | 28.1 | 25.7 |
| 800 | 39.4 | 39.2 | 37.6 | 34.2 |
| 900 | 51.1 | 50.8 | 48.7 | 44.2 |
| 1,000 | 64.7 | 64.3 | 61.6 | 55.7 |
The 175-grain load drifts the least at every distance, showing 55.7 inches at 1,000 yards versus 64.7 inches for the 140-grain ELD-X – a 9-inch advantage at that distance produced by its superior G7 BC. At 500 yards in a 10 mph crosswind, the 175-grain drifts 12.6 inches versus 14.3 inches for the 140-grain – a 1.7-inch difference that is meaningful when a deer’s vital zone spans only 10 inches.
The 140 and 150-grain loads show nearly identical wind drift at every distance, despite the 100 fps velocity difference between them. Their similar G7 BCs (0.248 vs 0.261) produce a near-wash in wind performance – the higher velocity of the 140-grain essentially cancels its BC disadvantage relative to the 150-grain. For load selection in wind, the 160 and 175-grain loads provide a measurable advantage; the choice between 140 and 150-grain can be made entirely on trajectory and terminal performance preferences.
Inside 400 yards in a 10 mph crosswind, all four loads drift under 9 inches – within the vital zone of elk and moose with a center-mass hold. The 7mm Weatherby’s high velocity relative to other 7mm magnums means its wind drift at practical hunting distances is among the lowest in the 7mm class.
Velocity Retention
The expansion thresholds: 1,800 fps for standard soft points; 1,600 fps for bonded designs like the Nosler AccuBond and Hornady ELD-X; 1,500 fps for monolithics like the Barnes TTSX.
| Range (Yards) | 140gr ELD-X (fps) | 150gr AccuBond (fps) | 160gr GameKing (fps) | 175gr TTSX (fps) |
|---|---|---|---|---|
| 0 | 3,303 | 3,200 | 3,100 | 2,975 |
| 200 | 2,929 | 2,852 | 2,769 | 2,667 |
| 400 | 2,578 | 2,517 | 2,449 | 2,370 |
| 600 | 2,248 | 2,195 | 2,139 | 2,082 |
| 800 | 1,940 | 1,886 | 1,838 | 1,804 |
| 1,000 | ~1,651 | ~1,597 | ~1,548 | ~1,537 |
All four loads remain above 1,800 fps past 800 yards – well above the expansion floor for any hunting bullet at practical hunting distances. Even at 1,000 yards, all loads are between 1,537 and 1,651 fps, above the monolithic expansion threshold and near or above the bonded bullet floor.
At close range the concern is the opposite: the 140-grain ELD-X impacts at approximately 3,260 fps inside 50 yards. Cup-and-core bullets at those velocities will fragment aggressively on heavy bone – limiting penetration on elk and large deer at close range. Bonded designs like the ELD-X, AccuBond, and Partition handle these velocities reliably; standard soft points like the Sierra GameKing are better suited to shots past 100 yards where impact velocity has moderated.
All loads remain firmly supersonic past 1,200 yards at sea level.
Energy Retention
The thresholds: 1,000 ft-lbs for deer, 1,500 ft-lbs for elk and moose.
| Range (Yards) | 140gr ELD-X (ft-lbs) | 150gr AccuBond (ft-lbs) | 160gr GameKing (ft-lbs) | 175gr TTSX (ft-lbs) |
|---|---|---|---|---|
| 0 | 3,390 | 3,413 | 3,428 | 3,441 |
| 100 | 2,667 | 2,710 | 2,727 | 2,764 |
| 200 | 2,668 | 2,712 | 2,728 | 2,765 |
| 300 | 2,077 | 2,124 | 2,157 | 2,267 |
| 400 | 1,657 | 1,706 | 1,730 | 1,835 |
| 500 | 1,298 | 1,349 | 1,369 | 1,481 |
| 600 | 998 | 1,046 | 1,071 | 1,186 |
| 700 | 756 | 795 | 817 | 944 |
| 800 | 566 | 596 | 617 | 742 |
| 900 | 419 | 444 | 462 | 584 |
| 1,000 | 308 | 326 | 341 | 460 |
The energy data defines honest hunting limits for the 7mm Weatherby Magnum. For elk, the 1,500 ft-lbs threshold is maintained as follows:
- 140gr ELD-X: approximately 390 yards
- 150gr AccuBond: approximately 405 yards
- 160gr GameKing: approximately 415 yards
- 175gr TTSX: approximately 475 yards
The 175-grain load extends the ethical elk range by approximately 75 yards compared to the 140-grain – a meaningful difference when a shot opportunity presents itself at 450 yards. For hunters who expect shots past 400 yards on elk, the 175-grain load is the only option that maintains the elk energy standard at that distance with useful margin.
The original article stated “500-600 yards effective for hunting” as a general claim. The energy data shows that only the 175-grain TTSX approaches 500 yards on elk, and none of the loads meet the 1,500 ft-lbs standard at 500 yards. For deer, the 1,000 ft-lbs threshold is met by all four loads to approximately 580 to 680 yards depending on the load.
For moose – which requires the same 1,500 ft-lbs standard as elk – the 7mm Weatherby is limited to the same distances. At 400 yards with the 175-grain load there is only 335 ft-lbs of margin above the 1,500 ft-lbs threshold – workable but not generous for an animal that requires deep penetration on large body mass.
Terminal Performance Profiles
Hornady ELD-X
The Hornady ELD-X uses a Heat Shield polymer tip that maintains consistent BC and two-stage expansion with InterLock bonding preventing core-jacket separation at the 7mm Weatherby’s extreme impact velocities. In gel it mushrooms to 1.6 to 1.8 times its original diameter and penetrates 16 to 20 inches with weight retention above 80 percent.
At the 7mm Weatherby’s close-range velocities of 3,200+ fps, the ELD-X expands aggressively and generates a wide, decisive wound channel. Its bonded construction keeps jacket and core together at velocities that would separate unbonded designs. For deer at 100 to 400 yards and elk inside 375 yards, the ELD-X is a reliable, versatile hunting load. For shots inside 100 yards on elk or large bear, the Nosler Partition or Barnes TTSX provide more consistent penetration depth at extreme impact velocity.
Best application: Deer at 100 to 500 yards. Elk inside 375 yards with careful shot placement.
Nosler AccuBond
The Nosler AccuBond bonds a lead core electrochemically to a tapered copper jacket, preventing separation at all 7mm Weatherby impact velocities. In gel it expands to 1.5 to 1.8 times original diameter and penetrates 16 to 20 inches with weight retention consistently above 65 percent. Its bonded construction is reliable from 3,200 fps at close range down to 1,600 fps at extended distance.
For the 7mm Weatherby Magnum, the 150-grain AccuBond is the most versatile all-around hunting choice – flat enough trajectory for open-country hunting inside 450 yards on deer, reliable enough construction for elk inside 400 yards, and bonded construction that handles close-range impacts safely. For hunters who use one load for both deer and elk, the AccuBond delivers the best combination of trajectory and terminal performance.
Best application: Deer and elk at 75 to 400 yards. The best all-around load for the 7mm Weatherby Magnum.
Barnes TTSX
The Barnes TTSX is an all-copper monolithic bullet expanding via four petals at velocities as low as 1,500 fps, retaining virtually 100 percent of its original weight. In gel it drives 18 to 24 inches with a wide, consistent wound channel. At the 7mm Weatherby’s close-range velocities the four copper petals open dramatically.
The 175-grain TTSX is the best choice for elk past 400 yards in this cartridge, meeting the 1,500 ft-lbs threshold to approximately 475 yards while maintaining reliable expansion to approximately 700 yards from a velocity standpoint. It is also the required choice for lead-free hunting zones in California and parts of Canada, and the top selection for black bear and hogs inside 350 yards where complete bullet integrity through heavy bone is critical.
Best application: Elk at 75 to 475 yards. Bear, hogs at 50 to 350 yards. Required for lead-free zones.
Berger VLD Hunting
The Berger VLD Hunting uses a high-BC hollow-point design with delayed fragmentation – penetrating 2 to 3 inches before the thin jacket initiates rapid expansion, creating a large temporary cavity and broad permanent wound channel. In gel it penetrates 10 to 14 inches with a wide fragmentation zone.
A correction from the original article, which categorized the VLD Hunting as “optimized for varmints, predators, and deer.” The Berger VLD Hunting is a medium and large game hunting bullet – Berger’s varmint-specific bullets are a separate product. For the 7mm Weatherby, the VLD Hunting performs best on deer inside 400 yards where impact velocity drives reliable fragmentation. Its shallow maximum penetration makes it less suitable for elk, bear, or any large game requiring deep bone penetration.
Best application: Deer and pronghorn at 100 to 400 yards.
Sierra GameKing
The Sierra GameKing is a boat-tail soft point mushrooming consistently to 1.3 to 1.4 times original diameter and penetrating 14 to 18 inches with weight retention in the 60 to 75 percent range. At the 7mm Weatherby’s extreme close-range velocities, cup-and-core designs like the GameKing can expand aggressively and shed more core material than at moderate velocities – making it better suited to shots past 100 yards where impact velocity has moderated to below 3,000 fps.
For the 7mm Weatherby, the GameKing in 160-grain is a reliable deer hunting bullet inside 375 yards where it performs consistently on broadside shots through the ribcage. It is not bonded, which makes it less suited to steep angles on elk or large bear at close range. For deer hunters who practice with their hunting load and keep shots reasonable, the GameKing is a cost-effective choice that has taken enormous numbers of deer cleanly.
Best application: Deer at 100 to 350 yards. Best suited for broadside shots; not recommended for elk or large game close-range.
Practical Range Recommendations
The 7mm Weatherby Magnum is a 475-yard elk cartridge with the 175-grain TTSX or Partition – somewhat shorter than its velocity figures might suggest, because .284-inch bullets at these weights carry moderate BCs that limit long-range energy retention compared to the heaviest high-BC 7mm options available in the 7mm PRC.
Whitetail and mule deer: The 140 and 150-grain loads meet the 1,000 ft-lbs deer standard to approximately 580 and 620 yards respectively. The 175-grain TTSX extends that to approximately 680 yards. For most hunters in realistic field conditions, 450 yards is a responsible practical maximum. The 140-grain ELD-X is the flattest-shooting choice for open-country mule deer.
Elk: The 175-grain TTSX maintains the 1,500 ft-lbs elk standard to approximately 475 yards – the only load that meets it past 400 yards. Inside 350 yards all four loads deliver more than 1,730 ft-lbs on elk, providing good energy margins. For timber elk hunting inside 250 yards the Nosler Partition in 175-grain gives the deepest, most reliable penetration through heavy shoulder bone.
Black bear and hogs: Inside 300 yards with the Barnes TTSX 175-grain or Nosler Partition. Both animals require deep, reliable penetration, and the 7mm Weatherby’s high impact velocity at close range demands bullet construction that handles bone without fragmentation.
Pronghorn: The 140-grain ELD-X at 3,303 fps is one of the flattest-shooting pronghorn loads available. The 7mm Weatherby’s wide no-holdover window to 258 yards covers the vast majority of pronghorn shots in open sagebrush terrain. The extreme close-range fragmentation concern does not apply for pronghorn where shots under 100 yards are uncommon in that habitat.
For a direct comparison of the 7mm Weatherby against the 7mm Remington Magnum, 7mm PRC, and 7mm WSM in practical hunting terms, the long-range hunting calibers guide covers the full 7mm magnum family.
FAQ
How does the 7mm Weatherby Magnum compare to the 7mm Remington Magnum?
The 7mm Weatherby pushes 100 to 150 fps faster than the 7mm Remington Magnum with comparable bullet weights, translating to approximately 200 ft-lbs more muzzle energy and a slightly flatter trajectory. The 7mm Remington Magnum extends the elk energy standard to approximately 400 to 420 yards with its best hunting loads; the 7mm Weatherby extends it to approximately 475 yards. The trade-offs are faster barrel wear, proprietary Weatherby brass, and higher ammunition cost. For hunters who primarily shoot inside 400 yards on deer, the 7mm Rem Mag is more than adequate. For open-country elk hunters who want the maximum 7mm magnum capability from a standard-length action, the Weatherby provides a meaningful advantage.
What is the maximum ethical elk range with the 7mm Weatherby Magnum?
With the 175-grain TTSX or Partition, the 1,500 ft-lbs elk threshold is maintained to approximately 475 yards – the longest elk range achievable with this cartridge. In realistic field conditions with wind and ranging variables, 450 yards is a responsible practical maximum. Inside 350 yards, all four loads deliver more than 1,700 ft-lbs with comfortable margins above the elk minimum.
Why use bonded or monolithic bullets at close range with the 7mm Weatherby?
The 7mm Weatherby’s muzzle velocities of 2,975 to 3,303 fps produce impact velocities inside 100 yards that can cause cup-and-core bullets to fragment excessively, limiting penetration depth on large game. Bonded bullets like the AccuBond and Partition, and monolithics like the Barnes TTSX, maintain structural integrity at those velocities and produce consistent, reliable penetration regardless of range.
What is the barrel life of the 7mm Weatherby Magnum?
Expect accuracy degradation between 1,500 and 2,000 rounds. The 7mm Weatherby is an overbore cartridge burning a large powder charge through a .284-inch bore. Hunters shooting 75 to 150 rounds per year will see 10 to 25 years of useful barrel life – very acceptable for a dedicated hunting rifle. High-volume practice or competition use will encounter barrel replacement sooner.
What powders work best for handloading the 7mm Weatherby Magnum?
The 7mm Weatherby’s large case capacity requires slow-burning powders. Hodgdon H4831 and Hodgdon H4831SC are the most widely cited choices for 140 to 160-grain bullets. Alliant Reloder 22 and Alliant Reloder 25 produce excellent velocities across the full weight range. IMR 7828 and IMR 7828 SSC are established alternatives. Hodgdon Retumbo and Vihtavuori N165 work well with heavier 175-grain loads. Always use Weatherby brass and start 10 percent below published maximum charges.
What primers does the 7mm Weatherby Magnum use?
Large rifle magnum primers are standard. The Federal 215 and CCI 250 are most commonly specified in published load data. The Federal GM215M match magnum primer is preferred by precision handloaders for most consistent ignition. The slow-burning powders that fill the Weatherby’s large case require the hotter, sustained ignition of a magnum primer.
Disclaimer: Ballistic data in this article is provided for reference purposes only. Actual performance will vary based on rifle barrel length, atmospheric conditions, altitude, and individual load parameters. Always verify your zero at the range before any hunt. Do not apply published handload data without consulting current reloading manuals from Weatherby, Hodgdon, or Nosler. Never exceed maximum published charges. The author and myreloading.com assume no responsibility for misuse of this information.
Editorial note: Originally published January 2026, revised May 2026. This revision converted all ballistic tables to a standard 200-yard zero appropriate for a high-velocity magnum cartridge, added muzzle energy figures absent from the original energy table, corrected elk range guidance (the original stated 500-600 yards effective for hunting; only the 175-grain TTSX meets the 1,500 ft-lbs elk standard at approximately 475 yards), corrected the Berger VLD Hunting description (the original classified it as a varmint bullet – it is a medium and large game hunting bullet), added cup-and-core close-range fragmentation warning, added barrel life information, and added a velocity retention table.
