I know how many forum questions there are on the 770. I've used the search function...but I have a different dilemma. I already own a 770 in .243 (still with the crappy factory scope). I recently went antelope hunting and injured a huge pronghorn at 400 before finally getting an easy shot at 160 and tagging out (73 green, injured one was at least 80). Besides the fact that I lost the better buck, I don't want to just injure an animal that will die in a field later. I would like to get into longer range shooting and be confident out to about 6-700 yds. The optics are easy enough, but my question is whether I should put them on my current .243 770, or if the distance I want to shoot is futile on this rifle and caliber. The other option would be to buy a Remington 700 or Tikka T3 and add the same scope I would buy either way. The cost is $500ish more to get the new rifle, which is a bit of an issue at the moment. If I did it would be chambered in .308 or 300 WM. I do like to plug a coyote now and then which is why I chose the .243 in the first place. True life application would be reaching 600-700 confident range. What are your thoughts? Is it worth it to upgrade or stay with the 770? The 770 does shoot well if the scope didn't come out of zero every time it gets bumped. Thanks in advance!