What is the 303 British comparable to?

There's nothing wrong with .303, it's a nice, moderate round. However, it's antiquated and there's nothing it does that a cheaper, more available round can't also do just as well if not better. Plus, no one really makes .303 chambered guns anymore. -06 is more powerful, cheaper, more abundant.

In my personal estimate, don't waste your time with military surplus shit unless you've got money to burn.

In your place, I'd get an enfield in as good of condition as you can, and load the rounds light for fun.

Every published load is adapted, regulated, fooled around with, for the weakest firearm ever using it.
GOTO, .47-70, in any loading manual, for proof of this; we have loads for 'Trapdoors' (weak, but accurate), the1895 Marlin/1886 Wincheser (Stouter, still accurate), and the Ruger #1, which are very close to .458 Win Mag, at Max Energy/load.
A case with a rim has more mechanical re-inforcement, around the primer, than one without; expansion, accordingly, is less, as measured in the primer pocket, with equivalent loads, in rimmed and rimless cases.
Most of you know, I'm a bit 'queer' for single shot rifles; suppose we put the .303 in a Martini Action, a late one, of excellent steel, as opposed to an Smle? I truly believe that we could wash out the barrel, if a Chromoly barrel was fitted, before compromising the action!
The gun the .303 was designed for has but one locking lug, and is, by all critics, an excellent battle rifle, but, not too tolerant of pressure.
It's precedent, the Martini, is really hard to break: please do not ask me how I know this, but it, in late production, with issue barrel, will tolerate/survive in excess of 60,000PSIG, exceeding most bolt guns!
Were I considering a bolt gun, a rimless cartridge, like the .30-06, is a far better choice, with greater capacity, and potential, as well, but only in a bolt gun; and then, it must be in one of the stronger actions!
But, if it's tradition, and accuracy, above all else, I can run with any '06 on earth with a 'built Martini', in .303!
I am presently developing a .17 caliber 'Mach IV' cartridge, based on the .357Max Case, because it will be a more capable, and forgiving, cartridge than the original, due to the rim, with equal capacity, and velocity, of the rimless case. Not a 'Bolt gun' case, but, never designed to be; I'm just a 'single shot' kinda guy.
One must well define the results desired, and the hardware acceptable, to make any sort of 'informed decision', on a subject of this order.

If you think the .30-30 Winchester and .30-06 Springfield have taken a good amount of game in the U.S., the .303 British and 8x57 Mauser will most definitely rival, if not beat, those numbers.

As the United States saw the wisdom of using their military cartridges as hunting rounds—think .45-70 Government, .30-40 Krag and .30-06 Springfield—so did the United Kingdom and Germany, and the .303 British and 8x57 Mauser saw extensive duty in the colonies of both countries. Both cartridges—in one guise or another—were adopted by their respective countries in 1888, and both remain popular to this day. Both offer similar performance levels, but which is the smarter choice for the modern hunter?

What is the 303 British comparable to?

The 8x57 Mauser, or the 7.92x57 Mauser, 7.92x57mm J, 7.92x57mm JS or one of several names bestowed upon the cartridge, went through a series of revisions over the years. It was the first cartridge to use the soon-to-be-incredibly-popular 0.473-inch-diameter case head that remains in use in so many cartridges to this day, and its rimless design showed exactly how smooth a repeating rifle could feed from a box magazine. With a 57mm case, and an initial bullet diameter of .318-inch, the 8x57 would use a 227-grain round nose bullet, and designation of “I”—for Infanterie—which the U.S. Army mistook for an ornate “J.” Once the bore was revised in the early 20th century to 0.323-inch—the diameter which is still in use today—the designation was changed to “IS,” or “JS,” as it’s known here. That JS revision used a lighter, spitzer bullet weighing 153 grains.

Prior to Germany’s loss in World War I in which she lost her colonies in Africa including German East Africa (now Tanzania) and German South West Africa (now Namibia), many colonists and settlers relied on the 8x57 as their hunting rifle. It was used against all species—with varying levels of success—including elephant, and the rifles were handed down from father to son. My good pal, Namibian PH Jamy Traut, pulled out an iron-sighted 8x57 Mauser on the first day of our hunt together this year, if that’s any indication as to how well the 8x57 has hung on in a country which hasn’t been German in a century.

What is the 303 British comparable to?

Bullet weights for modern 8x57 hunting ammunition run between 170 and 200 grains, though the handloader has bullets weighing between 125 and 220 grains at his or her disposal. Velocities for the 8x57 Mauser—in European loads—tend to run about the same as the .308 Winchester, or just slightly behind the .30-06 Springfield, making the 8x57 a solid choice for an all-around hunting rifle. Many American factory loads are loaded “light” in deference to the early rifles, of suspect metallurgy.

Her Majesty’s .303 British is a shining example of Victorian-era engineering. The tapered, rimmed cartridge uses a bullet of .312-inch, named for the land diameter as the British do about half the time. It began life using a compressed black powder charge under a 215-grain round nosed bullet at 1850 fps. In the hands of soldiers and hunters, that load made an impression around the globe, from India to China to Australia to Africa. It was this load which Lt. Col. John H. Patterson killed the Maneaters of Tsavo in 1899. In different renditions, the .303 British would remain the chosen military cartridge until the 1950s, when it was replaced by the 7.62x51mm NATO. It had a large following among sportsmen in the British colonies, and remains a popular choice in Canada and South Africa. The cartridge was popular enough to be chambered in the Winchester Model 1895 lever-action rifle, and there were many surplus Lee-Enfield rifles after World War II, which hunters on a budget took advantage of.

What is the 303 British comparable to?

The .303 British makes a good choice as an all-around cartridge, with enough rifles still in commission and enough good ammunition to feed them. Modern ammunition is centered around the 150- and 180-grain bullets, and the velocities tend to run just a bit slower than the .308 Winchester, with the 150-grain load moving along at an average of 2675 fps, and the 180-grain at just under 2500 fps.

Which serves the hunter better? If you were to scour the gun shops for a cool vintage rifle, which would be the smarter choice? In this instance, I have to give the advantage to the 8x57 Mauser, for a few reasons. First, it feeds much, much better in a traditional bolt-action rifle. The rimless design doesn’t hang up in a box magazine, and the 19-degree shoulder gives excellent headspacing. The Gewehr 98 and K98 rifle are easily sporterized, and I’ve found them much more accurate than any .303 I've spent time with.

What is the 303 British comparable to?

While I’ve seen some cool double rifles in .303 British—and equally cool double rifles in 8x57 JRS, a rimmed version of the 8x57 Mauser—the practical hunter armed with a Mauser 98 in 8x57 is, in my opinion, better armed for the hunting fields. There are far more .323-inch component bullets to choose from for the handloader, and as a bore diameter, the 8mm or .323-inch has a definite advantage over the .311″-.312″ of the .303 British. For those who possess an accurate 8x57 Mauser rifle, and are familiar with its trajectory, there are few worries afield.

Looking for previous installments of our "Head to Head" series? We've got you covered.
• .30-06 Springfield vs. All Other .30s
• .17 HMR vs. .17 WSM
• .450 Nitro Express vs. .470 Nitro Express
• 350 Legend vs. .35 Remington
• .280 Ackley Improved vs. 7mm Rem. Mag.
• .404 Jeffery vs. .416 Rigby
• .243 Winchester vs. 6mm Creedmoor
 .300 PRC vs. .300 Win. Mag.
.30-06 Springfield vs. .270 Winchester
• 6.5 Creedmoor vs. 7mm-08 Remington
• 8x57 Mauser vs. .318 Westley Richards
• .358 Winchester vs. .350 Remington Magnum
• .22-250 Remington vs. .220 Swift
• .270 Winchester vs. .270 WSM
• .26 Nosler vs. 6.5-300 Weatherby Magnum
• .458 Win. Mag. vs. .458 Lott
• 7mm Rem. Mag. vs. .300 Win. Mag.
• .243 Winchester vs. 6mm Remington
• 7x57mm Mauser vs. 7mm-08 Remington
• .25-06 Remington vs. .257 Weatherby Magnum
• .338 Winchester vs. .375 H&H Magnum
• .30-30 Winchester vs. .35 Remington
• .257 Roberts vs. .250-3000 Savage
• .270 Winchester vs. .280 Remington
 .35 Whelen vs. 9.3x62mm Mauser
• .416 Rigby vs. .416 Remington Magnum
• .308 Winchester vs. .30-06 Springfield
 .22 Nosler vs. .224 Valkyrie
 .300 Win. Mag. vs. .300 WSM
 .223 Remington vs. .22-250 Remington

How powerful is a 303 British?

303 British to develop muzzle velocities ranging around 770 metres-per-second, (2526 fps) while the original version didn't exceed around 620 metres per second (2034 fps) .

Is 303 the same as 30 cal?

30 caliber is actually . 308 or 7.62 mm where english caliber 303 is . 303.

Is a 303 British a good hunting rifle?

The . 303 British makes a good choice as an all-around cartridge, with enough rifles still in commission and enough good ammunition to feed them. Modern ammunition is centered around the 150- and 180-grain bullets, and the velocities tend to run just a bit slower than the .

What is the effective range of a 303 rifle?

A deadly weapon 303 or 7.7×56 mm rimmed rifle cartridge that was deadly with a sure-shot kill range of at least 500 m.