or........... what about using them on your own range if you had, say, a 25 yard range attached to your house?
Your comments about Sterling assisting you with advice and some spares is indicative of their after sales and advice policy. A letter would ALWAYS elicit a swift reply from them. Mr Howroyd told me that a reply to a letter could/would inevitably end in a sale of something - even if it was some spares or just a new handbook!