Welcome Magnus
I would go with the 300. I don't own one of
the 710's but from what I have read from these guys I would avoid it like the plague
If the 710 is so wonderful why dont they chamber it in the mag's. The 300 will have more recoil but if you can convince Jen then you can over come anything <img src=icon_smile_wink.gif border=0 align=middle>

Mike