winchester
Welcome to the 243 club! I'm a big fan of this caliber for deer. My gun is a remington 700 I got from wal mart years ago. I use 100 grain winchester power points, also available at wally world. My rifle groups very nice with these rounds (about 1.5" at 100 yards), so I stuck with them. Turns out they do a fine job of putting down the deer too- haven't got one past 200 yards though (yet), but I never had one run more than 50 yards and leaking like a faucet the whole way. I never bothered to try anything else. If I was you, I would try a couple different rounds and see what groups the best and stick with it. You may get lucky like me and find that your rifle likes the first thing you try.