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Common uses: Hunting, Big Game, Long Range
| Type | rifle (centerfire) |
| Typical load | 200gr Remington Premier Swift A-Frame |
| Muzzle velocity | 2900 fps |
| Muzzle energy | 3736 ft-lb |
| Published G1 ballistic coefficient | 0.357 |
| Case length | 72.4 mm |
| Overall length | 91.4 mm |
| SAAMI max pressure | 65000 PSI |
| Common twist rate | 1:10" |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 2900 | 3734 | -1.5 |
| 100 | 2638 | 3090 | 0 |
| 200 | 2391 | 2538 | -3.5 |
| 300 | 2156 | 2065 | -13.2 |
| 400 | 1937 | 1665 | -30.3 |
| 500 | 1731 | 1330 | -56.7 |
At 1,000 yards, 8mm Rem. Mag. (200gr at 2900 fps, 100 yd zero, standard conditions) has a modeled come-up of about 41.5 MOA / 12.1 MIL, retaining 1041 fps (subsonic).
| Range (yd) | Velocity (fps) | State | Drop (in) | Elev (MOA) | Elev (MIL) |
|---|---|---|---|---|---|
| 300 | 2156 | Supersonic | -13.2 | 4.2 | 1.22 |
| 400 | 1937 | Supersonic | -30.3 | 7.2 | 2.10 |
| 500 | 1731 | Supersonic | -56.7 | 10.8 | 3.15 |
| 600 | 1542 | Supersonic | -94.9 | 15.1 | 4.39 |
| 700 | 1375 | Supersonic | -147.7 | 20.1 | 5.86 |
| 800 | 1233 | Transonic | -218.8 | 26.1 | 7.60 |
| 900 | 1122 | Transonic | -313.1 | 33.2 | 9.66 |
| 1000 | 1041 | Subsonic | -434.7 | 41.5 | 12.08 |
Extended predictions beyond 500 yards are modeled from the same G1 engine — useful for initial DOPE, but outside the 500-yard manufacturer-table validation audit. Confirm with observed DOPE, especially near transonic.
A retained-energy reference only — not a shoot/don't-shoot distance. Real effective range depends on your accuracy, shot placement, bullet construction, and conditions. The ~1,000 ft-lb (deer-sized) and ~1,500 ft-lb (elk-sized) figures are commonly cited rules of thumb, not standards.
Your barrel, ammunition lot, and conditions will differ — always verify against the manufacturer's data and your own rifle.
The 8mm Remington Magnum is a hard-hitting, long-action belted magnum capable of driving heavy .323-caliber bullets at high velocity, giving it a flat trajectory and heavy downrange energy well suited to elk, moose, large bears, and open-country big game. Its ballistic potential comes at the cost of stout recoil, a large powder charge, and a requirement for long magnum actions and heavy rifles. Commercially it never caught on: factory rifles and ammunition have always been scarce, and the limited selection of American 8mm (.323) hunting bullets further narrowed its appeal. Today it survives largely as a handloader's cartridge and among owners of the original Model 700 rifles, respected for its power but overshadowed by more popular magnums in its class. Its lasting significance rests as much on the wildcats and factory rounds spawned from its case as on its own field use.
Introduced by Remington in 1978 and chambered in the Model 700 BDL, the 8mm Remington Magnum was built on the full-length .375 H&H Magnum belted case necked to .323 caliber, positioning it against the .300 Weatherby and .338 Winchester magnums for large, heavy game. Though it never achieved broad commercial success, its case proved influential as the parent of the 7mm STW and the .416 Remington Magnum.
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