Are you sure that's a 7x57? All I've ever known were 7.65x53.

 

Absolutely sure it's 7x57 ... I have to reload 300 rounds that have been fired through it over the past few years.

 

That rifle started its life as a 7.65x53mm and somewhere along the way it was changed to a 7x57mm. Boyd's gunstocks may be able to help with a composite stock. The link is listed below. All the best...
Gil



http://www.boydsgunstocks.com/

 

Thank you ...