Stay away from that 7.62, it just doesnt have much power. I hunt in oklahoma, colorado and wyoming ( I am not rich, I just spend what little money I have) and I end up with shots over 100 yards frequently. I took a 150 pound doe (before field dressing) with the 243 at 160 yards and it worked perfectly. If I lived and hunted only where there were whitetails, I would only use a 243 or 6mm remington. Get him a 243 and he will use it forever. EJ