I have a Tikka T3x in 223. Using Hornady Match 73 ELD and 68 BTHP I get 0.7" groups at 100 yard (measured edge to edge). This is with the factory barrel. Is there any accuracy to be gained by going to a match grade barrel? I know alot of times the ammo might be the limiting factor. I don't reload, so buying Hornady Match is my best option.