M. Lapin,
Quote:
So yes, you absolutely can measure constriction without knowing bore size.

After your description of measuring you may not know the bore, but the contraption
you are using to measure does, that is why you set it to zero and then measure the
difference. So what you say is accurate as far as the operator, but...

I've always thought these gadgets not very practical and can only give you an estimate
of actual choke:


JMTC.

JC

"...it is always advisable to perceive clearly our ignorance."ť Charles Darwin