Will be making a first trip to SA in May. Is it a requirment to have the caliber designated(engraved) on the barrel? I have a Sako action with a custom barrel and the caliber was never engraved on the barrell. I have owned this rifle for 30 years, caliber was not engraved for the sake if it were ever stolen, the theif would not have easy acces to caliber( agree or not, that was the reasoning at the time), of course the action is fully identified with a serial number. This rifle was a full custom from the action up in 338 06. A great caliber IMHO.