i came across an ar50 a while back for a deal i couldnt pass up. it has a less than high quality scope on it now. i have started to reload for it and would like some help. i will be usind it mainly for coyotes at ranges frome 300-600 yards would a millet hold up on it or is my best option a swfa ss 16x42. i would like a variable power but i want one that will hold up and i dont want to pay 1500 right now.