.303 37* H headstamp

Can anyone give me anymore info on this .303 round the headstamp is 37* at 12 oclock and H at 6 oclock I have found some info saying that it was manufactured by HP of Austria for the Netherlands ??? can anyone shed any more light on it. The round has a black primer and a high magnetic attraction all over the bullet, not sure if AP or CNCS enveloped bullet


Richard, it was made in the Netherlands by the N.V. Nederlandsche Patronen, Slaghoedjes- en Metaalwarenfabriek located in Dordrecht, which was a branch factory of the Austrian Hirtenberger company.



many thanks


For the Netherlands Airforce armed with Lewis, Vickers K and Browning .303 MGs.

Doc AV

Thanks Doc AV

Does anyone know what the black primer colour signifies