I hear a lot of talk about the time & trouble of setting up certain chronos.



** Dr. Oehler & M D tell us that chronos give better accuracy with 'farther' screen spacing.
>>> I mounted my screens EXACTLY 5 ' C - C in a 2X4 first then a 2X6 with S S III. No muss, No fuss, Doesn't take long.
I'm going to mount the IIIs flush with the top of the board, just haven't gotten a roundtuit.

I set up with the first screen 10' from my muzzle.




PIX for demo only.
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Jerry


jwall- *** 3100 guy***

A Flat Trajectory is Never a Handicap

Speed is Trajectory's Friend !!