Fisher .338 Cartridge Pen
Product Description

When a .338 round was shot through the Remington 700 Long Action Rifle it was capable of penetrating a piece of 3/8-inch steel at 1000 yards.
Thanks to the Nitrogen Powered Space-Pen refill inside this pen, you are able to write at any angle, through water - dirt - oil and in extreme cold and heat.
You might not achieve the .338’s ground speed of 2800 feet per second but you will accomplish a ton of writing!