This past season i shot Magnum Blend. I know I should have known this but I didn't think about it. There are different lots of these shells and I know that shell companies change shells. I am going to see William at Sumtoy chokes and get a choke built. I don't know if I should get a local to load me some shells with all the components listed on the box so it can be reporduced if the components are available the next time I need shells. The question is should I go ahead and get some shells loaded and then match a choke to the shells and gun or wait until I need some shells and build a shells to the gun and choke combo.