When looking for a good donor gun l keep coming across ads that have various information in them like ,1 1/8oz proof "what does this mean". and are Damascus finished barrels "OK" for use in a double rifle l will be only using the mono block and cutting off the barrels ...AND is a box lock better to use than a side-lock. ?? this is going to be a great project when l find the right gun to use plenty of learning to be done but that`s what life is about isn`t it .?

This is one of the ads

(Holloway & Company Side lock double barrel shotgun in 12g. England. 30 inch full and full choked Damascus finish barrels. 1 1/8oz proof. Double trigger. Extractor. Original butt plate).