20mm mk.100 USN

[kahu1]

a selection of inerted 20mm usn rounds ,as used in the A-4 Skyhawk.

TP,APT,dummy,HPT,LPT,dummies.
partly sectioned (by me) APT proj.

cheers Bob.

 

[HAZORD]

Hey Bob,

Nice variety on the projectile colors and case types. We don't see the brass cases very much here in the states. I've never seen one before now.

 

[SG500]

a selection of inerted 20mm usn rounds ,as used in the A-4 Skyhawk.

TP,APT,dummy,HPT,LPT,dummies.
partly sectioned (by me) APT proj.

cheers Bob.

Nice rounds Bob. Are any of them headstamped (the early ones were, with FA and the date).

Dave.

 

[Weasel Pilot]

Anyone know what the tracer burnout range was for the APT? Believe this was the Mk108.

 

[Tony Williams]

Very nice! I have a couple of those.

For information, the 20x110 UN MK 100 series ammunition was only used in two US Navy aircraft guns of the 1950s: the MK 12 (a modified Hispano) and the MK 11 (a strange twin-barrel revolver only used in a gunpod). The MK 12 was the USN's standard aircraft gun from the 1950s until it was replaced by the USAF's M61 rotary in 20x102, being fitted to several aircraft (although the A4 Skyhawk was the most successful and widely used).

 

[kahu1]

Hi ,
Most of the steel cased mk.100 i've got are RNO 67 to 82 H/S.
The oldest steel case i've got is (NECO 53 ),the next oldest is (IS 55).
The brass cases are made up for use as dummy rounds ,no H/S and the brown dummy is missing the primer pocket,just a solid base.
The HPT is a nickled brass case ,no H/S.
Most steel cases are Kronak or cad plated .
cheers Bob.

 

[SG500]

Hey Bob,

Nice variety on the projectile colors and case types. We don't see the brass cases very much here in the states. I've never seen one before now.

Hi John, attached a photo of an early brass cased 20 X 110 with headstamp.
Dave.

 

[HAZORD]

Nice! Thanks Dave!