I’m not sure what he did either...with the wire bent into a hook?

talking about 1/6 oz, he is referring to weight. 73.8 grains. There are 437.5 grains per Ounce. So I’m guessing he is speaking of actual weight. How that corresponds to trigger “pull” weight I have no idea.

Edit: ok, I think what he means is he used the wire bent like a hook, to use as a weight on the blade. And he continued clipping wire until int went from depressing the blade, to not, and then measured the weight of the wire at 73.8 grains.

The only thing is spring weight...and more importantly spring rate doesn’t work like that. But it’s really not important as the safety blade spring does not add to the overall trigger weight.