My 1902 Daly-Sauer BLNE runs .722 both bores, IIRC. Chokes are unaltered .008 and .030. I would guess that your bores are not .729.

Before altering anything try spreader loads. If you can roll your own try some loads with soft shot and/or disc/inserts and/or fiber wads. I have gotten skeet patterns out of full choke barrels.

Sam