[Bill Harris]

You have to be pretty old to remember the purpose of those holes! Once upon a time before "double-pumpers" you could buy a kit to change vacuum secondaries to mechanical. In order to get rid of the bog, you got a special accelerator pump nozzle that directed some of the shot through two little pipes to the secondaries. Those holes were for the little pipes to pass through and squirt into the secondary barrels. Pretty lame huh?