.300 ICL Grizzly

Infobox Firearm Cartridge
name= .300 ICL Grizzly


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origin= United States
type= Rifle
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designer= Arnold Juenke
design_date=1960s
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parent=.300 H&H Magnum
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.300 ICL Grizzly (ICL stands for Increased Case Load) is a rare big game cartridge developed by Arnold Juenke, a gunsmith who owned Saturn Gun Works in Reno, Nevada. The cartridge's parent case is that of the .300 H&H Magnum, and indeed the two are so similar that .300 H&H ammunition can safely be fired through a rifle chambered in .300 ICL Grizzly, as can the ammunition of another .300 H&H-based cartridge, the .300 Weatherby Magnum. The casings will fireform upon discharge.