Mike a large Sika Buck on the Chincoteague refuge is 90 pounds most go 50 to 80 pounds. These little deer are small due to their diet. They are outstanding eating. The hunt is a culling hunt each year to keep them in control on the refuge. I have killed them with a 16 gage shotgun and 1 oz #3 buck-shot hand loaded in low pressure 2 1/2 hulls. Shooting distance is usually 50 yards or less. I would not use a gun that cannot make an ethical kill. People have used a 25-35 Winchester, are they pretty close in ballistics?