I am rebarreling a Sako TRG in 260 Rem with 1-8"twist. If I push the bullet at 2770fps out of a 24" barrel (SouthWest Ammo numbers). Should I stick with a 24" or should I get a 26" barrel? I am looking at shooting either 140gr VLD's or 140gr SMK's out to 1000yds.