The topic of this article may not meet Wikipedia's general notability guideline. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted. Find sources: – ···scholar·JSTOR(February 2022) (Learn how and when to remove this template message)
Test barrel length: 28 Source(s): Kynoch Ammunition.[2]
The .240 Magnum Rimless Holland & Holland (also known as the .240 Apex and the .240 Super Express) and the .240 Magnum Flanged are a pair of centrefire sporting rifle cartridges developed in English gunmakers Holland & Holland in the 1920s, primarily for use in hunting deer and plains game.[1]
Overview[]
The ballistic performance of the .240 H&H in factory loads is very similar to that of the .243 Winchester, with a 100-grain (6.5 g) bullet with a diameter of .245 inches (contrary to the .240 name) giving a muzzle velocity of approximately 2,900 feet per second (880 m/s). When it is loaded at the same pressure as the .243 WSSM using modern powders, the .240 H&H has the potential for slightly better performance.
Most bolt-action rifles made for the .240 H&H will be amply strong enough to handle handloaded cartridges at high pressure.