Have a trade offer for a Ruger Express in 7mm Rem Mag. Looks great and has iron sights, which I like. Anyone have any first hand experience with the accuracy and quality of this rifle? If accuracy isn't great, can anything be done to accurize using stock barrel (trigger job is probably a first step)? Secondly, for longer range shots at elk or moose, is 7mm Rem Mag a good choice or do you prefer 300 Win Mag?