Re: Recommend a good bullet weight...
I wouldn't go above 180gn for your situation. This will carry the mail to 600yds. As for factory fodder, I would get something with either the Nosler Ballistic Tip or AccuBond in it. Either of these through both lungs equal death.
With the Barnes bullets you can probably drop back to 165gn and still complete your goals. They are a little more expensive but damn tough bullets.
I only use reloads and this year I have been using the 140gn AMax in my 6.5-284Norma and all I can say is "Damn!" As of Saturday, I have filled my NC Big Game Tag(s) out, completely. 6 bullets, 6 deer. Longest shot was 420yds on a big doe, closest was a head shot at 140yds. Five of the six were DRT. The only exception was a doe I shot at 200yds with 115gn Berger in my .25-06. Punched through both lungs and she ran approx. 75yds across the bean field. Head going down and tail spinning.
Regardless of the bullet, shot placement is the key. JohnnyK.
"The pleasure you get from life is equal to the attitude you put into it."