over the phone.tried the ballistics in my 1187 20 and was not that impressed,not a horrible 20 inch with fed 7's but the hevis kicked the feds butt.called natchez yesterday and the guy told me he did not know the constriction of the choke i wanted,i said see ya later.i pm'd clark but no response.i knew i should have tried that choke first after talking to the former shootum.