For an Alabama deer?!! Adult 2 1/2yr. buck is about 145lbs and your 3 1/2+ yr. olds are 165lb.-175lb. live weight.
Good luck with that. LOL!
Kidding aside, I think you're making a mistake. I urge you to ask around IN YOUR AREA and see what others are using. If I were there, I fill the pickup over and over with calibers like a .243, 6mm, .257Roberts, .260 & .270. I see no need to use calibers any larger.
Oh, and every deer within 250 yards would be history if you gave me my Marlin 336
30-30 with Hornady LeveRevolution shells!
7mm mag, uh? LOL! Sorry to interject such a lack of enthusiasm for that caliber, but if you shot as many deer as I have in the last 30+ years, you'd realize other calibers will work just fine. Matter of fact, I'm not a fan of the 30-06, but give me bullets of 125gr and I'd be a deer killin' machine without the black and blue marks on my shoulder. LOL! Remember, the larger the weight of the bullet, the more felt recoil on your shoulder.
The ultimate deer caliber? Why it's the .260!
Oh, one last thing... when you get your 7mm Rem Mag, be sure to get this as a necessary accessory:
http://www.amazon.com/gp/product/B00...d_i=B0019D4BLG
Take care,
iSnipe
