I am wanting to build a multi purpose 308 for shooting f/tr and plinking subsonics around the camphouse. I am looking at a 20" criterion threaded barrel with 1:10 twist bedded into a Stockade prarie dog special stock and SSS competition trigger. I already have a Stevens .223 that I would rebarrel. What do you guys think of this, will I be able to compete in f/tr with that short of a barrel? Thinking about 175 SMK's and varget or h4350 for f/tr and 175 round nose bullets with trailboss powder for subs. Is this doable or do you have any other suggestions? Only would be shooting to 600 in competition.