Another point of view . Send your 38 to Teague Precision ( I did ) . Order 4 chokes only , 2 x .015 1 x 0.25 1 x 0.30 . This will stop you having too many choices .
Shoot all your clays with the 3/8 , then for game do what I do and forget to change to the other two chokes , realise you’re still killing everything with the 3/8 and a good cartridge ( 30gm Black Gold 6 do nicely ) , put the other 2 in a drawer until you really , really need them which will be infrequently . .
As you’re an engineer , the trade off will be to take the gun down to Teague Prevision yourself and get a tour around the kit in their machine shop , it’s brilliant !