Picked up an experimental 20x102 dummy today


#1

This one is the T228 experimental dummy; supposedly the predecessor of the M52E1, M601 or M775 API-T (according to this link: 212.178.67.161/ftp/20mmcollector … T283E1.pdf ) It’s got a brass cartridge case, no primer pocket and some sort of inert filler for weight. The projectile is ink-stamped, “20MM DUMMY, T 228, LC-2-1” The driving band is marked, “CEG-1-3-53 20MM T283E1”

-WRM


#2

WRM,

Check out this old thread showing a 20x102mm dummy similar to yours but with the rotating band marked to indicate it is a T61E4.

viewtopic.php?f=8&t=8123

Dave


#3

WRM, this T228 dummy was adopted as the M51 dummy. It is one of a short list of cartridges assigned with T numbers for USAF use. Regards, Fede.


#4

Thanks for the info! I also have the matching dummy cartridge with the same projectile (but the case is electric-primed) on it’s way to me right now.

-WRM


#5

WRM,

Would that round your getting with an electric primer actually be a dummy? Not sure, but with that T61E4 projectile I’d think it would be a T154 Practice (M55?).

I assume that the T228 can be found with variously marked inert projectiles but I haven’t seen any with a primer. That certainly doesn’t mean much though, so maybe others can comment!

Dave


#6

I have a similar cartridge only the ink on the projectile reads, “20 MM DUMMY 1.6 LC-53”. The driving band is stamped, " 20-MM MK 11-0 A LOT ( next in a square box is), HMC, then 1-15. The projectile tip, which is a separate piece from the rest of the projectile is stamped 1211649-1.


#7

Here’s the one that I have on the way:

gunbroker.com/Auction/ViewIt … =467921953

-WRM


#8

WRM,

I had misunderstood your earlier post…

Nice item! There looks to be a groove in the case near the head?

Dave


#9

It just showed up in today’s mail; yes, there’s a groove machined into the case near the base.

-WRM