this was an old 44 mag with sights,,,,,,the front sight was pretty low
some of my newer sighted H%Rs might have sights too high
the hardest part was removing the old sight
it was screwed in not dovetailed....
and the sight had to be dismantled to get to the screw
i removed the rear scope base screw and installed it into the OLD sight screw hole
then screwed in the LO-PRO until it looked right
turned down the lock nut
put in the lazer bore sighter......it was dead on
there would have been elevation adjustments but not windage
as i said the is an old 44 with the oversized bore
they sights did not cause the key holing
i will get some pictures and a range report
as soon as i load up some oversized slugs
so far i am happy with the sights.....glad i ordered extras to play with