Deer gun season is starting in a couple days here in Oklahoma. I want to get a good rifle under $500 in a couple days and get i ready to go hunting the weekend after Thanksgiving. I've heard several different opinions on what I should buy. The most common seem to be the 270 and the 223. Looking around the local stores, I notice that .270 ammo seems to be cheaper and more readily available. I just want something that shoots as straight and level as possible, and that has some knock down power to it. What about other rifles like the 30-06, 30-30, 7mm, 300, 243, etc? How are they for deer hunting? I live in Oklahoma so there is a lot of open space, but I doubt I'd attempt anything over 250 to 300 yards. Thanks for any info! Matt