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Westley Richards .318 Rimless Nitro Express – A Near Forgotten Classic of Once Legendary Status

The introduction of reliable metallic ammunition components towards the end of the 19th century signalled the beginning of the most competitive era of British rifle calibre development. Gunmakers of the day, including Holland & Holland, John Rigby, W.J. Jeffery and Westley Richards, vied for the position of premiere rifle maker, and in doing so introduced a plethora of proprietary calibres, each boasting its own unique and deadly virtues. 

One such cartridge was the Westley Richards .318 Rimless Nitro Express, sometimes referred to as the ‘.318 Accelerated Express’, which was introduced in 1906. Largely forgotten, it was once the medium calibre by which all others were measured, the noted John ‘Pondoro’ Taylor commenting in his seminal work African Rifles & Cartridges published in 1948, that ‘this is undoubtedly the most popular and most widely-used British medium bore’.

Available in two loadings, a 180gr bullet with a velocity of 2,700 fps, and the more widely-used 250gr load with a velocity of 2,400 fps, the calibre became immensely popular. This popularity was based on the phenomenal penetration that the long torpedo bullet with its high sectional density and moderate velocity was capable of achieving. Whilst the conventional round-nose 250gr bullet set the standard, it was the cleverly-designed pointed nickel-capped bullet (designed by Leslie B. Taylor, then Managing Director of Westley Richards) that created the greatest stir. A forerunner, perhaps, to modern ballistic tip bullets, it was capable of very rapid expansion and was known to be devastatingly effective on most non-dangerous game. 

In skilled hands, the calibre was capable of taking the largest game found in both Africa and India, and was held in high regard by such hunting legends as Alan Black, Baron Bror Blixen, The Maharaja of Patiala, Count Alfred Potocki and Quentin Grogan, to name but a few. 

Not only was the round devastating from a practical point of view, but the short nature of the round allowed it to be built into standard length Mauser 1898 actions. This action was cost effective to use in the manufacture of a bespoke rifle, thereby placing the .318 at the disposal of a much wider audience. More importantly, lightweight, compact rifles could be built that were quick handling and easy to carry. 

Interestingly, just prior to the First World War, a supposed improved version of the calibre, referred to as the ‘Square Shoulder’ was offered. It was designed to overcome, amongst other things, issues with headspace and subsequent misfiring; the square shoulder locating solidly at the front of the chamber. As fate would have it, war intervened and the square shoulder concept disappeared into obscurity. Rifles chambered for this long forgotten variation are extremely rare indeed.  

Moving forward, there has been renewed interest in the .318 Westley Richards, both from pre-owned vintage rifle collectors and those in the market for a new rifle. Collectors now appreciate the diverse variations in model, style and engraving produced by Westley Richards, not only in the bolt action rifle format, but also double rifle and single shot rifle formats. The round clearly must have been very popular to have warranted such diversity. 

From a new hunter’s perspective, factory ammunition is now available, along with all the components necessary to keep the calibre very much alive and well. Bullet technology has moved on considerably with  recent tests using Woodleigh hydrostatically stabilised bullets proving, once again, that the calibre still boasts formidable penetration. 

For traditionalists, the classic round-nose bullet in 250gr is readily available in both solid and soft-nose format. Recently, Westley Richards completed several new rifles, all of which have unequivocably proved in the field that the calibre is as capable today as it was over  110 years ago.

Westley Richards has an outstanding reputation for supplying a comprehensive selection of pre-owned guns and rifles. We pride ourselves on our in depth knowledge of the many sporting arms built over the last 200 years, placing particular emphasis on big game rifles, like the 577 Nitro Express, 505 Gibbs and 425 Westley Richards. Whether looking to grow or sell your collection of firearms, or simply require a trusted evaluation, our team from the sales department would be delighted to hear from you. To view the latest available, head to the used shotguns and used rifles pages, and for those interested in new firearms, explore our custom rifles and bespoke guns pages.


  • Dr. Paul A. Draghi on November 10, 2021 at 4:07 pm

    What a splendid article, Trigger, and much overdue. The .318 WR, which I have only fired with 250 grain bullets, has always seemed to many to be the finest cartridge in the .30-cal. range in terms of effectiveness, accuracy and notably gentle recoil. The cartridge was also well known in the States: when at the age of ten in 1959 I was tasked by a family friend to acquire some .318 WR Rimmed for a double rifle, I was delighted to find that a well-known outfitter in Hartford, Connecticut--Clapp & Treat--stocked both the rimmed and rimless versions, and I easily obtained a brick of the ammunition there. (As both my grandfathers had been customers of the store since before the First World War, they did not raise an eyebrow in selling the ammo to a ten year old.) Some time after that, Clapp & Treat moved from their historic site in downtown Hartford to Farmington Avenue in West Hartford, and sadly closed in 1991. The days when a 10-year-old can walk into a store in Hartford and purchase a brick of center-fire cartridges are long gone, but I am grateful for the fact that this exceptional cartridge is alive and well, as your fine article attests. With best regards, Paul

    • Trigger on November 11, 2021 at 10:18 am

      Dear Dr.Draghi

      Many thanks for your interesting response and reflection on a long gone era. The .318 is indeed a great cartridge at at one time the go to calibre for professional hunters who hunted just about every species of African big game with it. In North America it would undoubtedly prove an effective calibre on all the species of bigger game.

      All the very best


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