My 2 cents. I scoped my X7 but I use a peep sight & very small fiber optic dot for front sight on my 357 max When shooting with a peep I sight it in & test my reloads by centering the front dot in the peep Then use what people call a 6 o clock hold. I put the front dot on the bottom of the bullseye. When shooting for fun or hunting I put the dot where I wnt to hit. Now this works for me out to 100 yards or so. 2 or 3 inch group or so. Thats the best I can do with peep sight. My eyes just arent that good any more. After my max is sighted in I can hit softball sized targets ,very small pumkins out of the garden. out to 85-90 yards freehand 9 out of 10 times. My max is set up to sit above a thicket so average shot is gonna be 60 yards or so.

Hubby Im shooting great groups with my X7 with 70 grains BH209 & a 200 grain SST with MMP blue sabots. The X7 got a short barrel
I dont know how much powder you can burn in it before your wasting powder. I havent went past 110 grains.