Tunnel Sight Query

[Strangely Brown]

Does anybody know when the DCRA started to use a round bull for target rifle competitions, as opposed to the "tin hat" target?

I'm aware they started to use this type of targetry before the NRA did at Bisley; but can any of the Commonwealth target shooters on this site give me a date?

It would help to establish when the tunnel foresight started to be developed, my own thoughts on this are mid to late 1960's.....

Edited to add that I have emailed the DCRA direct, but your input would be appriecated!

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