Millcreekfarms
Senior Member
7-08 has lots more bullet weight choices and can be used on larger animals later in your sons life
Great offer Randy!
I really can't imagine that .02 in caliber (1mm) or 20gr bullet weight options is going to make any difference at the deer killing range most of us hunt.
I use a 243 and love it. I also love mocking my friends who are proud to emphasize the word "magnum" when describing their rifles to the adoring crowds of fans. In my personal estimation the .243 may be the most versatile GA hunting rifle in this present age. Combine ammo/component availability, weight ranges (55gr-100gr) speed range (2,900 fps - 4,000 fps), yada yada - it's awesome for coyotes, hogs, deer, and you name it.
Also, you may want to consider your long-term plans. If you have a 270, you're not going to improve your long range ballistic performance at the 100-150gr range with either of these rifles. Perhaps consider when the occasion comes to go down...if you can see a situation where you may want to shoot 55gr at coyotes for example, the long range reach of a blistering 4,000 fps .243 is handy.
I highly doubt anyone could blind shoot a .243 and 7mm-08 on here and tell a difference in recoil, or terminal performance on deer-sized game.
My vote is to find what's cheapest...and then get a .243