Two Experimental? USA 105x370R Howitzer cases from 1950's

[ron3350]

I need information on these 105mm Howitzer cases. Both have base key holes .

1. Steel case coiled with a steel base. The primer has a flange with 2 cut-outs so maybe the key holes help prevent the base from turning when the primer is tightened or removed? Base has white load data stencilled. Hard to read. Shell M1 How Dual G etc.
Primer marked: KN-6.415 M28B2. 1-54
Headstamp: 105MM M14E1 1953 RMO 1-108

2. Brass case with a screw-off steel primer plate and base plate. 12 mouth crimps. Is it fixed or Semi-fixed shell?
Case is headstamped: 105mm T33 Case 1952. BUE-11-16...
Stencilled: CTG XM 461 SHELL INERT? LOADED LIGHT BODY FOR HOW 105MM
Primer: PA-102-1 M1B1A2 8-56

 

[HAZORD]

The wrapped steel case is just the standard M14E1 wrapped steel case. The other one however is an experimental test case (T number).

 

[ron3350]

Only one reply so thanks HAZORD. The M14E1 I had no information about - the 2 key holes were interesting.
I still need info on the T33. Does light body mean case wall, base or total case weight? Looks like a complicated case construction.
I weighed a few 105mm cases from my collection but one case weight is not a good average.

M14 and M14B1 weighed 2.4kg approx. M14B1 is 2.2kg. T33 is 2.53kg. M14E1 weighed 2.93kg so is the heaviest.

I rarely find British made cases but have ECC 1962. 105mm M14 Lot 17.
Most of my cases are USA made or Australian by MF and ADI.