There are at least seven different Miller trigger designs plus the Ithaca copies. Not all work equally well, hense the evolution of that trigger mechanism. More than any other single trigger design, if a problem develops with an Infallable, chances are it's operator head space. The Infallable can not be tricked into balking or doubling no matter how hard you try. Even out of the gun, in your hand, you can not trick it out of proper sequence, right first or left first. Thats not to say that you can't fit the sears so delicately that the gun won't double. Have you ever examined how robust and ingenious an Infallable is? Now, I like a Miller trigger (designs 5 & 6 only), but it looks as though it was fashioned from a bent tuna can and a couple of paper clips where an Infallable looks as though a team of German Elf machinists stayed up all night just to produce the "one" perfect mechanism. In my opinion the only advantage a Miller has, that it requires less removal of precious wood to fit it. Over the years I have tried to examine as many of the 150+ ST designs that predate WW II (the area of collecting that interests me)and unforntunatly I must agree with the other single trigger smiths, the Infallable/Worrest trigger is the KING. It's too bad the tremendous machining costs associated with that mechanism led to it's demise. I would love to see a pre-war ST that is a more dependable design ...American or foriegn.
