.300 Winchester Magnum
The .300 Win Mag is the standard heavy hitter of North American hunting - 180-200 grain .30 bullets with magnum speed for elk, moose and big bears at any honest range.
When guides say 'bring enough gun' for elk timber or coastal bears, the .300 Winchester Magnum is usually what they mean: the 1963 belted .30 that pushes 180s past 2,950 fps and 200s near 2,850, carrying kill-clean energy to distances lesser cartridges only reach with hope. The price is posted on your shoulder - this is a cartridge to train with, not merely own.
What it is
THE mainstream .30 magnum - long-action, 165-220gr bullets, six decades of military/match/hunting pedigree and universal support.
What it hunts best
Elk anywhere, moose, big bears with premium heavies, African plains game - the passport cartridge for large-and-far. Deer hunters carry it happily too; it's simply more than deer require.
Trajectory & energy
180gr at 2,960 zeroed at 200: ~6.9" at 300, ~20" at 400. ~3,500 ft-lb muzzle and 1,826 ft-lb at 400 for Hornady's 180 gr InterLock American Whitetail (chart below): authority that shrugs at range cards.
Recoil & shootability
~28-32 ft-lb - genuine magnum recoil that punishes poor form and builds flinches in the unpracticed. Weight, brakes, suppressors and real practice are the ownership contract.
Rifles & ammo on the shelf
Everywhere magnums are sold - every maker, deep premium-load selection, global availability.
.300 Win Mag Ballistics Chart by Bullet Weight
Four Hornady .300 Win Mag loads from 178 to 200 grains, all from a 24-inch test barrel.
| Load | Muzzle | 100 yd | 200 yd | 300 yd | 400 yd | 500 yd |
|---|---|---|---|---|---|---|
| 180 gr SST (Superformance) - velocity (fps) | 3130 | 2926 | 2732 | 2546 | 2368 | 2196 |
| 180 gr SST (Superformance) - energy (ft-lb) | 3915 | 3422 | 2983 | 2591 | 2240 | 1928 |
| 180 gr SST (Superformance) - trajectory (in) | -1.5 | +1.3 | 0 | -5.9 | -17.2 | -34.8 |
| 180 gr InterLock (American Whitetail) - velocity (fps) | 2960 | 2739 | 2530 | 2329 | 2138 | 1956 |
| 180 gr InterLock (American Whitetail) - energy (ft-lb) | 3502 | 2999 | 2557 | 2168 | 1826 | 1529 |
| 180 gr InterLock (American Whitetail) - trajectory (in) | -1.5 | +1.6 | 0 | -7 | -20.4 | -41.5 |
| 178 gr ELD-X (Precision Hunter) - velocity (fps) | 2960 | 2789 | 2625 | 2467 | 2314 | 2166 |
| 178 gr ELD-X (Precision Hunter) - energy (ft-lb) | 3463 | 3075 | 2723 | 2405 | 2116 | 1854 |
| 178 gr ELD-X (Precision Hunter) - trajectory (in) | -1.5 | +1.5 | 0 | -6.6 | -18.8 | -37.6 |
| 200 gr ELD-X (Precision Hunter) - velocity (fps) | 2860 | 2707 | 2558 | 2414 | 2274 | 2140 |
| 200 gr ELD-X (Precision Hunter) - energy (ft-lb) | 3632 | 3253 | 2905 | 2587 | 2297 | 2033 |
| 200 gr ELD-X (Precision Hunter) - trajectory (in) | -1.5 | +1.6 | 0 | -6.9 | -19.9 | -39.5 |
Loads: 180 gr SST Superformance, 180 gr InterLock American Whitetail, 178 gr ELD-X Precision Hunter, 200 gr ELD-X Precision Hunter. Numbers from Hornady's published table for each load (links), 200-yard zero; trajectory is inches above (+) or below (-) the line of sight. Read on 26 October 2026; your rifle and barrel will differ.
Bottom line
The proven answer when the animals are big and the country bigger - IF you'll train enough to shoot it as well as you'd shoot a .308. Placement still out-ranks headstamps.
Caliber legality varies: many states set minimum calibers, straight-wall rules, or season-specific restrictions for big game, and they change. Always confirm the current regulations for your state, species and season with the official wildlife agency - this page is general guidance, not legal advice. Ballistics figures are typical factory-load approximations; your rifle and load will differ - verify at the range.
Range-day gear, whatever the cartridge
A cartridge only performs as well as the zero and the practice behind it. These are the tools for that part.
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