Nacl01> So,what 'zactly is the caliber of a chili-dog?
Dunno about that chili dog . . .
But the F-35 gun caliber is 25 mm.
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F-35 Lightning II 25mm Gun System
http://www.gd-ots.com/armament_systems/ags_F-35.html
General Dynamics Ordnance and Tactical Systems has been awarded a system development and demonstration contract by Lockheed Martin Aeronautics Company to design, produce and integrate the gun systems for the F-35 Lightning II stealth fighter.
GD-OTS is developing the GAU-22/A for the internal and external gun systems based on a derivative of its GAU-12/U 25mm Gatling gun. An internally mounted gun system will arm the F-35A Conventional Takeoff and Landing aircraft variant and a removable or “missionized” externally mounted gun system will arm the F-35B Short Takeoff and Vertical Landing and F-35C Carrier-Based aircraft variants.
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(Article does continue. Zim.)
(Also, on the same site 
Fixed Wing
Gun Systems
A-10 30mm
AV-8B Harrier 25mm
F-15E 20mm
F-16 20mm
F/A-18 20mm
F-22A 20mm
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Zim.

Mad Poet Strikes Again.