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Numerous attempts were made to convert the .410 Shotgun model (which was single shot, and generally manufactured by the Ishapore arsenal) to a bolt-action repeating model by removing the wooden magazine plug and replacing it with a standard 10-round SMLE magazine. None of these is known to have been successful, however, a compromise was reached by fitting a Stevens/Savage .410 magazine into an original SMLE magazine housing.
The .410 conversions were mostly used for crowd control as riot shotguns in India. They are chambered for a 2" British .410 shotshell, basically a blown out .303 British cartridge. As these cartridges have not been manufactured for several years, ammunition is strictly a "roll your own" prospect. Many of these conversions have been reamed out to accept modern 2 1/2"-3" .410 shotshells in the United States. As the pressure for even high velocity .410 ammunition are well below standard .303 British pressure ranges these conversions, when done by a competent gunsmith, are quite safe to shoot.
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