The Rigby Highland Stalker comes in five chamberings. Here's some insight into way you may have walked past.
Walk into any conversation about the Rigby Highland Stalker and the calibre discussion goes one of two ways. Either someone gets misty-eyed about the .275 Rigby, Corbett, Bell, tigers, ivory, all of it - or someone sensible points at the .30-06 Springfield and says you can buy ammo for it at any gun store in the country.
Both are fair. But there's a third option sitting right there on the order sheet that deserves more attention than it gets, especially if you're hunting Australian deer.
The 8x57 Mauser.
The rifle it was born to sit in
Here's the thing most people miss. The Highland Stalker is built on a genuine Mauser 98 action - controlled round feed, big claw extractor, three-position safety, hinged floorplate, the whole 1898 recipe. Rigby's partnership with Mauser goes back to 1897 and the action on a modern Stalker is still stamped as Mauser's work.
The 8x57 is the cartridge that action was designed around. Not adapted for. Designed around.
Everything about the pairing is native. The 8x57 uses the same .473" case head as the .30-06, sits in the standard-length magazine without compromise, and gives you a full 4+1. No magnum action, no altered follower, no feeding quirks. You're running the original combination the way Oberndorf intended, in a rifle that will outlive you.
There's something to be said for that.
A quick history, because it matters
The 8x57 goes back to 1888, when the German Rifle Commission adopted the Patrone 88 for the Gewehr 88. A fat 226-grain round-nose sitting on top of the new smokeless powder, running about 2,000-2,100 fps. Bullet diameter was .318".
In 1905 they redesigned it. Bullet diameter went up to .323", the projectile went to a 154-grain spitzer, and velocity jumped enormously. That's the version we shoot today, the 8x57 JS, or IS if you're being pedantic about the original German "I" for Infanterie that American intelligence misread as a "J" after WWI. The name stuck anyway.
Why this matters to you: older pre-1905 rifles with .318" bores exist, and putting modern .323" ammunition through one is genuinely dangerous. This is the reason American ammunition makers load 8x57 down to a timid 35,000 psi, they're protecting themselves against a hundred-year-old surplus rifle in someone's shed.
Your Rigby is not that rifle. It's a modern .323" bore, modern steel, modern proof. Which means you can feed it European ammunition loaded to the cartridge's actual potential, and you should. Buy RWS, Norma, Sellier & Bellot or Geco, not the downloaded American stuff. Same headstamp, very different performance.
What it actually does
Modern European factory loads put a 196-grain projectile out at roughly 2,500-2,550 fps for around 2,700-2,800 ft-lb at the muzzle. Lighter 180-grain loads run about 2,700 fps, and 150s will crack 2,850.
Compare that to the .30-06 and the honest answer is: it's a wash. Velocity for velocity, bullet weight for bullet weight, they're within a whisker of each other. Anyone telling you the 8x57 is dramatically better or dramatically worse is selling something.
But there are two differences that matter in the field.
Frontal area. A .323" bullet has about 10% more frontal area than a .308". That's a bigger hole, more tissue displaced, and a slightly wider margin when a shot doesn't land perfect.
Sectional density. A 196-grain .323" bullet carries essentially the same sectional density as a 180-grain .30-06 load and the 220-grainers go well past it. Heavy-for-calibre bullets with high SD are what drive penetration through heavy shoulder bone and into the far lung on a quartering animal. That's not a theoretical benefit on sambar. That's the whole game.
So: same ballistics as a .30-06, but with a wider bullet and the option to go genuinely heavy. In a purpose-built stalking rifle, that's the trade you want.
Why it suits a 22" barrel
The Highland Stalker comes with a 22" barrel as standard. That's deliberate, it's a stalking rifle, meant to be carried up hills and swung in thick timber, not a bench gun.
The 8x57 is a modest-capacity, efficient cartridge. It doesn't need 26" of barrel to get where it's going. Chamber a big overbore magnum in a 22" tube and you're dumping powder and velocity out the muzzle as noise and muzzle flash. The 8x57 in 22" is operating right where it's designed to operate.
Same story with recoil. In a 7.8 lb rifle, a full-power 196-grain load pushes about the same as a .30-06, firm, honest, and entirely manageable. Nothing that'll teach you to flinch, which matters more than any ballistic chart when the stag steps out at last light.
And the standard Rigby pattern iron sights are regulated for 65, 150 and 250 yards. Those are stalking distances. The 8x57's trajectory sits comfortably inside that envelope with a heavy bullet, which is precisely why the regulation makes sense on this cartridge.
Where it earns its keep in Australia
This is where the 8x57 stops being an interesting curiosity and starts being a properly sensible choice.
Sambar, red and rusa. Victoria's minimum legal requirement is .270 calibre with a 130-grain projectile. The 8x57 clears that comfortably .323" and 196 grains isn't close to the line. More to the point, heavy bonded 8mm bullets are built for exactly this animal: heavy-bodied, thick-skinned, often taken in steep country at close range where the shot angle isn't ideal and you need to reach the vitals through bone.
Fallow, chital, hog deer. Comfortably covered, though you may want to step down to a 150 or 160-grain load if you're worried about meat damage.
Pigs and goats. The 8x57 is a European boar cartridge at heart. Norma, RWS and S&B have been loading it for driven boar for a century. Big Queensland pigs in thick lantana are the same problem with a different accent.
The one honest caveat: if your hunting is all long, open cross-gully shots at 400m, a flatter-shooting modern cartridge will serve you better. The 8x57 is a woods and hill cartridge. It does its best work inside 250m. So does the Highland Stalker.
Ammo reality check
The most common objection is availability, and it's not nothing, but it's smaller than people think.
Norma alone loads the 8x57 in Oryx, Vulkan, Whitetail, Tipstrike and Ecostrike. RWS load it. Sellier & Bellot's 196-grain SPCE is widely stocked in Australia and shoots better than its price suggests. Geco load it. Hornady have carried 8x57 in their lineup for years.
Handloaders have it even easier. Standard large rifle primers, dies from every major maker, and Australian-made Woodleigh have long produced .323" projectiles in weights that suit exactly this kind of work.
It's not .308 Win. You won't find it at every counter in every country town. But if you're spending money on a bespoke British stalking rifle, you're not the sort of person who buys ammunition on the way to the hunt anyway.
The verdict
The .275 Rigby is the romantic choice, and it's a beautiful thing. The .308 and .30-06 are the practical choices, and nobody will ever argue with you. The 9.3x62 is the big-timber sledgehammer, and it's superb.
The 8x57 sits in the middle and quietly does everything. It's the cartridge the Mauser 98 was built around, it matches the Highland Stalker's 22" barrel and iron sight regulation perfectly, it clears every state minimum for our largest deer, it recoils like a .30-06, and it puts a wider, heavier bullet through the shoulder of a big sambar stag than the calibres most people default to.
There's a reason it's been in continuous production for over 130 years, and it isn't nostalgia.
The Rigby Highland Stalker in 8x57 Mauser: Mauser 98 action, 22" barrel, grade 5 walnut, hand-finished chequering, traditional Rigby pattern iron sights regulated for 65/150/250 yards, 4+1 capacity, 7.8 lb.
Full specifications, upgrade options and availability through Backcountry Outfitters, Rigby's Australia and New Zealand agent.
