Can anyone tell me what the ballistic coefficient is for most JHP 22 magnum projectiles?

Winchester's works out to .103. You can calculate this and several other ballistic functions at the JBM site. Select Ballistic Coefficients (Velocity) and note that the range input is in feet, not yards. The first time I ran it the results looked a mite peculiar. :confused:
http://www.eskimo.com/~jbm/calculations/calculations.html

Bye
Jack