I have been looking at a .22 rifle to pick up and after looking at two main manufacturers, savage mark II BLVSS and ruger 10 / 22, I have decided on the ruger just out of personal preferance cause it is semi-auto compared to the bolt action which I would perfer on a larger calibor rifle, with that being sayed. I have not shot a ruger 10 / 22 yet but indend to they got 1 at the indoor range just to see how it it before I buy it. 1. I am unaware of the different models, I am talking about barrel diferences, is the target model, with the bull barrel, worth the extra money? 2. Also if I wanted change out the factory stock with; lets say a Boyd's blaster stock (thumb whole stock), how can I compensate for this stock since it is manufactured for a .920 bull barrel, if I have oem barrel? 3. And what is the consensices of bedding the action and barrel to the stock? Is it worth it? Not looking to shoot competition (yet) with it just have fun and accuracy. 4. Having read many forums on the subject what is the thought of replacing the oem trigger to an aftermarket one?