Ian, Bedfords for instance just used a steel bush with (I believe) a centreless ground pin. So yes steel on steel, which may require a (slightly more) regular greasing.
You local spring maker will be able to advise.
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Bluebell
Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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