U.S. 37MM M55A1 round, with M50B2 dummy fuze


#1

Manufactured by WMCo…2-4-43 is that the manufacturer?
Does the color represent anything? USN?
Was this an A/A/A round, or an A/C gun round?


#2






#3

Andy–The blue color denotes a Target Practice (TP) round.

BTW, I fixed up your links so they would show up in your post. In the future, choose the “img” (the bottom choice), not the “http” link.

ADMIN.


#4

Thankyou Mr Ron.
Would that have been fired into a soft target, and survived, never fired, and from an Airacobra, or from the ground?


#5

WM Co.?


#6

Andy–Your round has never been fired as evidenced by no rifling marks on the copper driving bands.

I do not know who WM Co is.


#7

OK Ron, I thought the bands lost their color from being fired,thanks


#8

Andy–To my knowledge the driving bands on all projectiles of all sizes are never painted. I think it might have to do with the paint would foul the rifling if the bands were painted.


#9

Thankyou Ron…perhaps someone will know the maker, and the type of 37MM weapon it was designed for…


#10

This M55A1 projectile is a TP-T (Target Practice Tracer) and it was loaded in the 37 mm Mk. IIIA2/IIIA2B1 case (37 x 145 R) for AN-M4 and M10 aircraft guns, and the 37 mm M17/M17B1 case (37 x 223 SR) for M1 (AA) and AN-M9 (aircraft) guns. It was made by Westfield Manufacturing Co. of Westfield, Massachusetts.

Here is 37 mm for M1A2 & AN-M9 with a TP-T M55A1 projectile with M50 dummy fuze made of plastic:


#11

Would the Airacobras cannons accept this projectile? Was it made for us with the P39 variants?


#12

Yes, it will! Just keep in mind that the AN-M4 and M10 guns had 145mm cases.


#13

Anybody have an extra 145mm casing F/S?


#14

This is the 15-round articulated link belt and feed box for the M4 cannon: