Max,there are many of us that load the Herters 16ga shells.The big question is which ones? The purple shells that were sold by Herters were 2.750" long a few years back.The new ones,now made by Winchester are 2.650" long.There is a big difference in the two types and how you go about loading them.Bear in mind that both types take an oversized primer.Feel free to give me a call.PS--If you have any of the older Herters purple factory shells,I would not shoot them in a L.C.Smith gun.I have had them pressure tested after I saw a Smith gun blow apart.These shells are way over American Specs.Good luck: Charlie 410-756-2095