Shot concentrator marked R.G.M


#1

One the top of a shot concentrator is marked R.G.M. I believe the item is French or German. Can someone help with the intials?


#2

rgm or mgm ?
picture please
jp


#3

RGM (or DRGM) = Reichsgebrauchsmuster. It means that the design was registered in the German empire. Sort of a protected design.


#4

Thank you for the information on R.G.M. Here is the item. it has a lead slug base punched crimped to a brass slotted tube. Two strings cross between slots through a cavity filled with sawdust. The blue paper cap is marked as best as I can read R.G.M. yet Boger. It is approximately 16 gauge. I suspect the sawdust filled area is for shot but I am receptive of other suggestions.

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