Before reading your article Peter I couldn't wrap my head around how a rifle could be chucked to a lathe. Just goes to show there's a right tool for every job.
My rifle is regular Mk3 no wire wrapping, I don't intend to wrap it. Is it required to shoot tennis balls? I would think not since its not a 1 1/2 lb ball or are there other forces at work which require the strengthening? Or I'm totally off base and a EY rifle is required?