For all those who have a need to adjust a "dovetailed" foresight like those on the Mosin Nagant and Mauser K09 :
I have just bought a couple of tools from the USA which allow you to finely adjust them.
They save using the unpleasant ,and less easily judged,"Hammer and Brass Drift" method.
If you want to look them up on the web: they are the LT2 and LT98 tools ,made by a chap called Stan Ward at a cost of $18 plus $9.
Pedictably :they are a block with a horizontal screw, and slip onto the end of the muzzle where they are positioned next to the foresight. The horizontal screw is used to push across the foresight (into the error) until it is offset by the correct amount.
I calculated that to move the fall of shot at 50 mtrs by 1" I needed to move the sight 6 thousands of an inch toward the Mean Point Of Impact (MPI) !
Out of interest : I needed to drop my MPI on the Nagant by 6" at 50 mtrs and by slipping a piece of rubber (Hellermann) electrical sleeving over the forsight pin (with an extra length of 1mm) it brought the shots right where I needed them.
Excuse the mixture of measurement units ,but that is what I used .
The actual calculation for the adjustment of the foresight on the Nagant turned out as "add one twentyfifth of an inch!" well ,going on "25.4 mm to the inch" I felt that using a correction of "add 1mm" was better. Also it turned out to be exactly what I had already guestimated ,and fitted before I came across the formula !
