.450 Bushmaster vs .350 Legend: straight-wall AR hunting
Straight-wall legality is the easy part. The real difference is 150 yards of reach and twelve foot-pounds of recoil, and what the shelf holds in November.
By TAS6 min read
If you hunt deer in a straight-wall state with an AR-15, the field shortens to two cartridges: the .450 Bushmaster and the .350 Legend. Both are legal in the states that allow straight-wall rounds, both run in the same lower, and both take deer cleanly. The difference is what kind of shot you take: the .450 is a 150-yard thumper with hard recoil, the .350 Legend is a 250-yard round that kicks like a .30-30. Choose by distance and shoulder, then check the shelf.
The numbers
| Load | Bullet | MV | Energy at 200 yd | Drop at 200 yd | Recoil |
|---|---|---|---|---|---|
| .450, 250 gr | 250 gr | 2,200 fps | ~1,600 ft-lb | -28" | ~25 ft-lb |
| .450, 260 gr | 260 gr | 2,150 fps | ~1,550 ft-lb | -30" | ~27 ft-lb |
| .350, 150 gr | 150 gr | 2,325 fps | ~950 ft-lb | -23" | ~13 ft-lb |
| .350, 175 gr | 175 gr | 2,100 fps | ~930 ft-lb | -27" | ~15 ft-lb |
Two readings of that table are correct. The .450 retains more energy and does it with a .452" diameter bullet that makes a wide wound channel at close range; the .350 shoots flatter, drifts less, and doubles the effective distance at which a 100-yard zero is still useful. The recoil column is the one that shows up in the field: the .450 in a 7-pound AR kicks about twice as hard, and on a cold morning from a standing position off a fence post, that is the difference between a settled shot and a flinch.
Platform: same rifle, two changes
Both cartridges run in a standard AR-15 lower, buffer and trigger. What changes is the barrel, the bolt and the magazines:
- .350 Legend uses the standard .223/5.56 bolt face — only a barrel swap and Legend-marked magazines are required. This is the cartridge’s quiet engineering advantage.
- .450 Bushmaster needs its own bolt (the case head is larger), its own magazines, and a barrel; some uppers also want an adjusted gas system. Everything else is unchanged.
The bolt difference matters for anyone with a parts drawer: a .350 build is one part away from a rifle you already own, while a .450 build needs the full set. Neither is difficult; the .350 simply has a shorter shopping list.
The November shelf
This is the part of the decision people skip in August and regret in November. The .350 Legend is loaded by Federal, Winchester, Browning and Remington in 145 to 175 grain soft points, and the ammunition shows up in ordinary gun-shop racks because the cartridge sells volume. The .450 Bushmaster is loaded by the same major houses, but the menu is narrower, mostly 250 to 260 grain soft points and a couple of heavier options, and stock is thinner because fewer rifles are chambered for it.
Live pricing on both caliber pages: .450 at $1.62 a round and .350 Legend at $0.76. The .350 is usually cheaper by a meaningful margin, and because it recoils less, you will practise more with it — which is worth more than the energy you give up inside 150 yards.
Hunting performance inside the legal range
At 100 yards both are more than adequate for whitetail: the .450 with a 250-grain soft point, the .350 with a 150 or 175-grain soft point. The differences appear at the edges. Push to 200 yards and the .350 is still a deliberate shot with a flat, wind-tolerant trajectory; the .450 needs a dope card and a steady rest, because a 30-inch drop at 200 yards leaves no margin for a distance misjudged by twenty yards. Inside 75 yards, in heavy brush where the shot develops fast, the .450’s diameter is an advantage, and its recoil matters less because you are not holding a long offhand shot.
Against heavier game the pattern continues: the .450 is frequently chosen for hog hunting where close-range penetration and bullet diameter matter, while the .350 is a deer-and-coyote round that happens to satisfy straight-wall rules. Neither is a elk or bear cartridge, and both should be treated as 200-yard-and-in tools.
The verdict
- Pick the .350 Legend if your stand shots run to 200 yards or beyond, if you want the lighter-recoiling rifle you will actually zero properly, if you are converting a 5.56 upper on a budget, or if shelf availability where you hunt matters. It is the better all-round straight-wall AR for most seasons.
- Pick the .450 Bushmaster if your shots are inside 150 yards, the brush is thick, you hunt hogs as well as deer, you want the widest wound channel available in the platform, and you do not mind practising around 25 foot-pounds of recoil.
The decision rule: if your real-world shot regularly exceeds 150 yards, the .350 Legend; if it never does and you value diameter over reach, the .450. The recoil column and the November shelf will both agree with the answer. For the same argument on a smaller scale — flatter against heavier at 200 yards rather than 200 — see .17 HMR against .22 WMR, and for why the weight column above moves the way it does, grain weight explains the physics in two minutes.
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