I running them through a factory rem 700, varmint sps, 26" bull barrel, with an upgraded stock. I have a vortex 4x16x44 hs on it. That recipe will cloverleaf at 100 yds, if I hold her steady, and is fairly accurate at 1000 and 1250. Those sizzling 107s make my 308 trajectory look like a mortar round at longer range. People scoff at a 243, but it's a heck of a long range round and I've stumbled onto a great combo with this particular rifle.