Swift Scirocco II 300 Win Mag 180gr – Powerful Elk Ammo

Description

Plenty of hunters buy a 300 Winchester Magnum and then feed it ammunition that cannot use what the cartridge offers. The Swift Scirocco II 300 Win Mag 180gr is not that. A bonded 180 grain bullet leaving at 2919 feet per second with a 0.520 ballistic coefficient is a load that stays lethal well past where most people are comfortable shooting, and it holds together when it lands.

• Why 180 grains is the right weight here
• Full specifications
• Elk, moose and big bodied deer
• Honest notes before you buy
• Recoil and barrel life, honestly
• The bottom line

Why 180 grains is the right weight here

The 300 Winchester Magnum will push a 150 grain bullet very fast and a 220 grain bullet very hard, but 180 grains is where the cartridge actually lives. It balances sectional density against velocity, and it is the weight most factory rifles are throated for. The Swift Scirocco II 300 Win Mag 180gr takes that proven weight and adds bonded construction, which is the part that matters when a bull turns at the wrong moment.

Energy tells the story. At the muzzle the Swift Scirocco II 300 Win Mag 180gr carries 3508 foot pounds, and thanks to that high ballistic coefficient it is still carrying well over 2000 at 300 yards. That is comfortably above what is generally considered adequate for elk, with margin left for the shot you did not plan on.

Full specifications

• Caliber: 300 Winchester Magnum
• Bullet weight: 180 grain
• Bullet: Scirocco II bonded polymer tip boat tail
• Muzzle velocity: 2919 fps
• Muzzle energy: 3508 ft-lbs
• Ballistic coefficient (G1): 0.520
• Case: reloadable boxer primed brass
• Quantity: 20 rounds per box
• Part number: SB10042

The 0.520 G1 coefficient is the headline number. It is high enough that the Swift Scirocco II 300 Win Mag 180gr behaves more like a long range target load in flight while still being a hunting bullet at the other end, which is a combination that did not really exist in factory ammunition a generation ago.

Elk, moose and big bodied deer

This is a big game load first. Elk in the timber, moose in the willows, big northern whitetails, black bear over bait. The bonded core in the Swift Scirocco II 300 Win Mag 180gr drives through heavy shoulder bone and keeps going rather than fragmenting on the surface, which is exactly what you want on an animal that can weigh six hundred pounds.

Set your zero at 200 yards and the Swift Scirocco II 300 Win Mag 180gr drops only a few inches at 300, which covers the great majority of real hunting shots without a dial or a holdover chart. If you do shoot further, the high BC means your ballistic solution stays honest in wind, which is where most long shots actually fail.

Honest notes before you buy

This is expensive ammunition, and there is no getting around it. Work up your zero with a cheaper 180 grain load, confirm with a few rounds of the Swift Scirocco II 300 Win Mag 180gr before the season, and hunt with the rest. That is how most people manage the cost without giving up performance when it counts.

It is also more bullet than a deer needs at close range. On a hundred pound whitetail at eighty yards, the Swift Scirocco II 300 Win Mag 180gr will do the job but you are paying for construction you did not use. Match the cartridge to the animal. Where this load shines is on heavy game and at distance, not on everything with hair.

Recoil and barrel life, honestly

A 300 Winchester Magnum kicks. In a light mountain rifle the Swift Scirocco II 300 Win Mag 180gr will move you, and a shooter who is not honest about that will develop a flinch faster than they develop confidence. A quality recoil pad, a muzzle brake or a suppressor, and a rifle heavy enough to absorb the impulse all help. So does shooting from a bipod and a rear bag rather than off a bench that puts you in a bad position.

Barrel life is the other cost of magnum performance. A 300 Win Mag throat erodes faster than a 308, and shooters who run hundreds of rounds a year will notice accuracy falling off. Hunting use is a different matter. A few boxes of the Swift Scirocco II 300 Win Mag 180gr each season will not hurt anything, and the barrel will stay accurate for decades at that pace.

The bottom line

For a hunter who owns a 300 Winchester Magnum and actually hunts big animals with it, the Swift Scirocco II 300 Win Mag 180gr is the load that lets the cartridge do what it was designed to do. You can read more about the bullet design at swiftbullets.com, or browse the rest of our stock on the MAG5 Firearms ammunition page.

MAG5 Firearms keeps the Swift Scirocco II 300 Win Mag 180gr in stock and moving, and we are glad to talk through bullet choice before you order. If you are working up a load for a new rifle, a single box of the Swift Scirocco II 300 Win Mag 180gr is a sensible place to start.