Thak you all and One by One.

Peter:
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Its a workable idea but the bullets have to pass through a wider area than only a hole.

Steve:
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No Sir, the bullet that I have to see is travalling at 550m/sec and its only 12.7 mm long and 10 mm thick, so I think It is going to cast a shadow of 10 mm wide for only 23 uSec ?? correct.

I think a normal photo transistor has that long a response time. I request to confirm.

Aka J:
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If I could I would announce year 2K1 Nobel Prize for peace for His highness Aka J.

(We still need guns despite we hate war)

With the RF doppler how would I achieve resolution, I mean the deviation in inches from the bull eye ??

Mike:
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The muzzle blast is not a problem, always the bullet has to emerge first from the muzzle and the blast smoke long after..........., we will use a suitable ventilation exhaust to clear the air before the next shot is taken.

Rotondo:
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But Sir, the resolution ??

The Crazy...
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Alpha_Q, you tried to screw this nice posting. make sure you ride the missile before it goes off.

Finally what is required:
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There shall be a window with 13 squars on each side, each one is a 1 inch squar. The centre squar is the bull's eye. Every squar is monitored with a 13x13 matrix of light source and sensors.

Regards

Babar/