I'd like opinions here please. My 410 is a simple break barrel smooth bore with a fixed modified choke. (Rossi) Measuring the choke with -pin gauge it measures .404. Do you believe that RBs measuring .402 would be too large? I don't have enough experience to know just how much they might bump up in the bore before reaching the choke and if they do bump up, just how much swaging down can be safely counted on in the choke. Thanks Gp