Where I hunt, I have just as much chance at a 25 yd shot as I would 400 yds. Our deer are 175lb for an average buck 100lbs for does, but can push well over 200lb on mature deer. I will be shooting factory ammo, max range 400 yds, average range 175-220yds. How well do the cheap Walmart Remington Express Corloks perform on deer at these ranges? They are deadly accurate in both 150 and 180 gr. What weight would be best for whitetail?