What brand barrel is best for the 300RUM. I am looking for accuracy and performance (velocity). What is the optimal length? How much velocity will I gain?
I have barrels from Kreiger Lilja Shilan all are good shooters there are more barrel makers just pick one of the premium barrel makers. You will get about 25 FPS pre inch. I would go with at lest 30 for Long range Hunting. How for do you intend to shoot?
Crow Mag
Walther tubes do fine for this caliber as well.
Here are a couple groups from a #2300 contour barrel 28" long 1-10 twist shooting factory Remington 180GR Scirrocco ammo at 100 yards.
Odds are if you go with a longer barrel, with a heavier taper you are going to have to open up the barrel channel for that stock. You want to be sure you get a heavy enough barrel that isn't going to whip when shot. The LSS stock barrel channel is not that wide.