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  1. The Ammo & Reloading Forum
    Hello, We use a shell with a tool called a Boulder Buster. A rock is drilled and then this tool is set in the hole with a shell. The hole is filled with water and when set off it it is set off it cracks the rock. The company has gone out of business and we can no longer get the shells. Is...
    12gauge boulder gauge primer rimfire shells shotgun
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