I've heard that "need to defeat the involuntary second pull" explanation before, but I don't believe it holds true with all mechanical triggers. In fact, I think it's only true with a relative few of them...
Involuntary second pull is a fact.
All ST gun systems - inertia and mechanical - have to deal with it.
How come I can get both hammers to drop with two voluntary pulls, if the system is supposedly designed to defeat an involuntary second pull?
An understanding of inertia trigger design would give you the answer. The system has a built-in time lag as inertia moves the trigger blade between the sears. The involuntary pull occurs immediately after tripping the first sear, and before the blade can move to the second sear.
How would the gun know if my second pull is voluntary or involuntary?
The same way a thermos "knows" whether to keep your drink hot or cold, Larry.
Inanimate objects don't have to "know" anything - they just have to obey the rules of physics.
To me, your quote implies that Burrard prefers a ST WHEN HE'S WEARING GLOVES--not that he totally abandoned the DT in favor of the ST for all his shooting.
I never claimed Burrard "totally abandoned" DTs for STs. Whether he switched back to DT guns in warmer weather is an open question. But these two statements might suggest an answer:
I think it is far more difficult to go back to two triggers after having grown used to one, than to change to one from two; and for this reason I would never advise anyone to have a single-trigger gun if he had other guns...which he used at times and which were fitted with double triggers.
I took to a single trigger five seasons ago, and it has been a perfect joy to me ever since."
