I have a Seekins SP10 in .308(Not the "M" variant). It's a factory rifle, with less than 1000 rounds on the barrel, but I want to make it a 6.5 Creedmoor now. Some barrels I see on the market require a headspaced bolt to have any kind of accuracy guarantee. My question is this: is it really as simple as buying an aftermarket barrel like a Proof Research and changing barrels? My current rifle is capable of 1/2 moa with Federal Gold Medal ammo, but I typically shoot 3/4 to 1 moa on my best days with consistency cuz I suck. My biggest concern is changing the gun and losing that dependability. Oh yah, it also needs to run reliably too.