CZ3D w/5" coil?

What would one expect to see going from the stock CZ3D coil to a 5" coil? I hear that it is very good on the F75. How much depth loss would be normal between the coils say if the CZ3D would air test a dime at 12"? Should this be about the same for a CZ6a?

Tks...

C.

On a good CZ that'll acquire a dime at 12" with the standard 8" coil................... you would then acquire this same coin to just over 10" with the 5" CZ coil. This is air-test and also Florida dirt test.