Big Bore Pistol Build

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
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jackssmirkingrevenge
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Mon Jun 17, 2019 5:47 am

Not my own work but made by Bob Sterne, one of the current greats in the world of pre-charged pneumatics.

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With a .30 cal barrel 12.5 inches long and powered by 2 x 12g CO2 cartridges, it can do around 14 good shots (7 rounds in each magazine) with 44.75 grain JSB pellets at around 475 feet per second.

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Here's a 0.30" pellet compared to a more traditional 0.177", quite a dramatic difference and around 7 times heavier.

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Front piercing cap

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Breech with magazine removed

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[youtube][/youtube]

In action, it packs quite a punch and is pretty loud!

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Some recovered pellets.
hectmarr wrote:You have to make many weapons, because this field is long and short life