Best advice I can give you is become a paid member here and read all the articles pertaining to Savage Centerfire rifles. You will learn just about everything you want to know as to working on your rifle.

Yes your rifle can be made to fit in an accu-stock with some modifications, but why do you want to? There are some better alternatives out there that are easier, better, and very affordable. As to a barrel, get ahold of Apache Gunworks or Northland Shooters Supply. Apache builds some of the best barrels I've had yet and his attention to detail is top notch. NSS sells some of the better big names of prefit barrels such as Shilen and Criterion (CBI). I like CBI and have one in 6BR and it is a shooter. Either guy will take good care of you.