7mm Mag all the way. I love my .270 and have shot a couple of deer with it, but I have shot 3 deer with my 7mm Mag and it belonged to my Great Uncle before that (he shot 4 deer with it before he passed away) and any deer that has been shot with it has not taken a step. Also very accurate. Took a nice 9 point at roughly 275 yards last year and put it right through the heart (probably just a lucky shot ). Not to go into any major history, but it belonged to My Grandpa after his brother (my Great Unlce) passed away. It sat in my grandpas gun cabinet for years untouched and still looks like new. Anyways, I always asked about it and why it was never really shot and he passed his on down to me last year, though I have used it for about 4 years.