I bought these on Friday from an engineering supplier, purely from an interest point of view. They came from SAF Lithgow, and while I havn't measured them yet, I'll bet they're for 7.62 or .303.
I wonder if anyone could put them to use??
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They need to be mounted under glass in a coffee table. They may not be rare, or even desirable to most.. but what a conversation piece. Keep the guests guessing for hours.
I'd bet not 1 in 10,000 people would have any idea as to what they are. The glass top coffee table is a great idea and would be a great conversation piece. Great find.
G'Day,
Can they be drawn through the bore using the helix ground into the broach to guide them or do they need to be driven at the correct pitch per revolution for them to work.
The helix forms its own 'thread' that is the rifling. A friend of mine made a puller using hydraulic rams, taken from the tail lift of a lorry. But if they're not 'lifting' equally, you're in trouble