Hi Don----yeh i drilled out rear apertures and use the largest front round aperture, just can't get enough light through em to shoot well.
Even with the scope, when you get a cluttered up backer, its tough to make good calls on the impact----those tiny bullets sometimes don't leave much to see.
at 300 yards we have multiple spotters calling shots to have some confidence in making the best call-----and we have a steel backer on the Buffler
looking forward to the weekend match shooting with Caleb is always a hoot and he's one durned fine target setter
Hope everyone has a great fathersday