This is my first year hunting big game. I've done my fair share of small game hunting (ie, squirrel, rabbit, etc). I just got my big game license a few weeks ago and I am currently using a .243 Win right now. Though, I am looking in to getting a Remington Model 770 but I can't decide whether or not to get the .270 Win or the .300 Win Mag. Anyone have any un-biased opinions on what caliber would be best for me? I've got approximately 75 acres that I can hunt on. Some of it being swampy and trees close together, and the rest being hilly and, still, trees rather close together. Should probably also be noted that I am currently not using a scope, either. I had a nice 7-pointer pop out in front of me a few days ago, about 20 yards away. And with the trees so clustered together, I think a scope would just inhibit a good, clear shot. I'll pretty much take any suggestions at this point. Happy Hunting!