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February - March 2005 Volume 40, Number
1 ISSN: 0017-7393 Number 233 |
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On the
cover... The Smith & Wesson Performance Center Model 629 Compensated Hunter is set up with a Burris 2-7x scope. The Model 629 Hunter features an 8.75-inch barrel and square butt stocks. Cover photo by Stan Trzoniec. |
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Except
when the .30-40 Krag was replaced by the .30-06, the history of American
military cartridges has been one of successively smaller cartridges. The .30-06 was
eventually replaced by another .30 with almost exactly the powder capacity of the .30-40
but featuring a shorter rimless case and lighter bullets. Known to civilians
as the .308 Winchester, the case was an adaptation of the .300 Savage, a round that
appeared in 1920 to approximate the ballistics of (guess what?) the .30-06.
The
.300 fit both the Savage 99 lever action and a light, short bolt action too futuristic to
survive, the Savage Model 20. (Think Remington Model 7 with controlled-round feeding.) The
1.87-inch case holds one-third less powder than the .30-06, yet .300 Savage ballistics
came reasonably close to the .30-06s original muzzle velocities, in particular the
150-grain load at 2,700 fps. How could this be? The .30-06 was born early in the evolution
of smokeless powder, but by 1920 new powders could create almost as much zip in a smaller
case.
In the
years just after World War II, the American military wanted a smaller case so it could
build a lighter autoloader. It tried the .300 Savage, but the short neck and 30-degree
shoulder werent ideal for autoloader use. Then it lengthened the neck and changed
the shoulder angle to 20 degrees, and the result was the .308.
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The .308 was loaded to higher pressures than
the .300 Savage (and even the .30-06), so factory ballistics exceeded those of the
original .30-06. Today the .308s standard 150- and 180-grain factory
loads are listed at 2,820 and 2,620 fps, respectively, about 100 fps faster than .30-06
ammunition achieved in 1910 (when Theodore Roosevelt used one successfully on a wide
variety of African game). Federals High Energy 180-grain .308 load is listed at
2,740, and Hornadys Light Magnums push 150-grain bullets to 3,000 fps and 180s
to 2,880. Handloaders can generally safely reach velocities somewhere between the standard
and enhanced factory loads. So in essence the .308 WCF is a short magnum,
because it at least matches and sometimes beats the standard ballistics of the .30-06, the
most powerful non-magnum .30.
The .300 Savage hasnt gotten a
technology boost. The Savage 99 is a strong action, easily adapted to the .308 in the
1950s but 99s in .300 started appearing in 1920, so SAAMI pressures are kept to
46,000 CUP. Even so, in a good .300 (especially a bolt action such as the Remington 722
and 700), a careful handloader can easily and safely exceed the ballistics of T.R.s
.30-06.
Neither short .30 gets much respect from
cutting-edge hunters who believe only magnums are useful on big game, but even
the 180-grain factory load for the .300 Savage (2,350 fps) is only 200 yards behind the
factory-loaded .300 Winchester Magnum, and the standard (not juiced) 180-grain .308 is
only about 100 yards behind. You can look it up.
Yet a .300 magnum supposedly knocks big game
on its butt at 400 yards, while a .300 Savage or .308 WCF isnt fully
adequate for elk and moose, even at woods ranges. Oh, well. The world is full of
such notions, but anybody who has hunted with the .300 Savage or .308 Winchester knows
they do fine on about any nondangerous big game out to 250 or 300 yards, which takes in 99
percent of the worlds big game hunting.
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If theres any such thing as an
inherently accurate cartridge, both would qualify. Almost any bolt- action .308 will group
three shots under an inch at 100 yards, and Ive owned Savage 99 .300s made 50 to 60
years ago that shot just as well as the average .308.
The 150- and 180-grain weights have been
traditional in .30 caliber ever since the .30-06 became popular, but in the .300 Savage
and .308, the compromise 165 grainer will do the same jobs, especially with todays
bullets. Both cartridges are a snap to handload, despite what you might read about the
.300 Savages short neck and sharp shoulder. Cases should be full-length sized when
used in lever, pump or autoloading rifles, but thats standard procedure for any
centerfire cartridge. Just about any powder with a burning rate around IMR-4895 does the
trick, though slightly slower powders such as Alliant Reloder 15 and Hodgdon Varget speed
up heavier bullets noticeably.
My first real big game rifle was a Savage 99
in .308 Winchester, which taught me many lessons in sporting rifle reality. The .308, for
instance, isnt regarded as a very flat shooter yet the only deer I managed to
miss with the 99 were shot over. In the decades since, I also learned that a .30-caliber,
165-grain bullet at 2,650 to 2,800 fps will do for about any of the worlds
nondangerous game.
You dont really need a
super-premium bullet in either the .300 or .308, but the use of a Nosler
Partition or Barnes X-Bullet certainly kicks things up a notch not in recoil, but
penetration on larger game. Even at 300 yards, a 165 shoots plenty fast and flat enough in
the .300 Savage, and in the .308 does just fine at 400 as long as you keep your
part of the bargain.
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