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Only one of a wide variety of wildcats from 22 to 40-caliber based on the 303 British case, the 303-25 is a 25-caliber version. It originated in Australia and was a common wildcat for chambering in Lee-Enfield and Martini actions as early as the mid-1940s.

The 303-25 has similar capacity to the 257 Roberts and was loaded to similar pressure; therefore, it was entirely adequate for hunting small- to medium-sized big-game and all manner of vermin.

This offered those on a limited budget a means of obtaining a flat-shooting, mildly recoiling rifle. All they needed was an inexpensive surplus Lee-Enfield, a 25-caliber barrel, and a gunsmith with the needed reamer. He could fix them up with a special, personalized hunting rifle for far less than the cost of a Remington in 257 Roberts, or any other factory rifle in a chambering with similar performance.

The only limitation was they had to handload, at least initially. This was a matter of pride with hunters of that era, as it is with many handloaders today. We are carrying on a tradition begun by our ancestors who necessarily handloaded their muzzle-loaders for every shot. That process allowed them to customize loads for various applications, just as cartridge handloaders can do today.

Ammunition for this chambering soon became available commercially. It is still offered in Australia and elsewhere.

The text associated with the cartridge description reflects opinions and conclusions of the author, M.L. (Mic) McPherson. Lee Precision and its employees do not necessarily either agree or disagree with any of his comments. We present these with due deference to his recognized expertise in the firearms field. His acumen extends to handloading and all aspects of ballistics - internal, external, and terminal.
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