I hate the sights on my white mountian there the factory sights the one with the v in the back not the partridge sight TC made...I like the TC partridge sight thats flat across the rear sight...I got a replacement fiberopic frount sight and I'm going to switch to the fiberopic rear sight too when I get both,I'll change the sights....this was my first time playing with saboted loads in this gun looks like it might like 80grs...I ran dry patches down between shots and a wet one when I started a new target