RE: standard or heavy barrel????
Jecole - Two years ago, I went out and bought a Kimber Longmaster VT (84m) in .22-250.It was a beautiful firearm with a laminated stock and stainless / flutted heavy barrel. I hunted with it 4 times and really disliked lugging 11lbs around. I sold it and bought a Remington 700 Mountain rifle in .243. It only weighs 6 lbs and accuracy is great. With the .55grain bullets, It shoots as fast and flat as the .22-250. But I also use it to hunt deer with 100gr bullets, something I wouldn't do with the .22-250.
Unless you're hunting prarie dogs / shooting multiple shots, I'd recommend the sporter (regular) barrel