For most its the trigger on an Enfield. I've watched folks shoot them with the same results as you. I guess you could call them a "2 stage" military trigger. But my No4 Mk1 really doesn't have that DEFINITE 1st stage, it kind of all runs together into a long pull. But I know my no.4 so well that when squeezing I can see the hammer start to lower out of my Peripheral, and I know when that happens the next slight movement is BANG. I have had this rifle a long time and I've just come to get used to its trigger. Now, its sporterized and shoots MOA no problem with my own loads. We will see if this No. 5 is any different.
"You're so drunk you cant hit nothin, In fact you're probably seeing double"...."I have TWO GUNS one for each of ya"