Just took possession of a cz455/mpa to practice with. Got it setup as close to my full size rig as possible to get some practice here at my house. I've got about 150yds that's easy to work with although 60-70 would be ideal because of a natural backstop and it's right off my back porch. I was thinking 3" at 100yds but was curious what yall are using? Obviously it's not shooting as precise as my bolt gun so I wasnt sure about target size.