In my opinion, the assignment was likely inappropriate for that age range. Its very likely a kid of that age would be influenced, even subconsciously, by the teachers leanings, and thus draw something with that leaning.
I'd think it would be fine for high schoolers, or even middle schoolers in...
Pardon me for being a hard ass on this, but as long as you think of it as "I only have had 2" you still have a problem. You won't be past it until you own it completely and stop trying to minimize it.
One was too many.
As far as the legal issues, I'm surprised at what some posted above, about...
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http://www.semperwest.com/
Have someone who knows what they are doing check out your shooting position. While .308 does kick harder than .223, holding the rifle poorly can make things harder than they need to be. After that, don't hesitate to get a recoil pad onto the butt to use while you make the transition.
After...
This.
Unless she has specifically asked you to pick one for her, make this an excuse for a date, or several, to check out a couple of shops and maybe a range or two where she can find out what she wants/likes/needs.
Others will correct me if I'm wrong: I've heard that a rifle chambered in .308 can shoot 7.62x51 ok, but sometimes the reverse can be a problem. I think this is largely said with semi-automatics in mind, and that a bolt action is less likely to see issue either way, due to the mentioned...
They've been convinced that guns are impossibly scary, and thus any means of reducing them must be applied, even if it means 'giving up a little freedom.'
Problem is, a lot of people on the right have been convinced that muslims are impossibly scary, and thus any means of reducing them must be...