Iknow a bullet for 7mmwsm better for the flattest shooting I have ever fired,it has a B.C of 644 and its available on .270 but they are not cheap,but I have yet to try it on game. The manufacture claims it is excellent www.lostriverballistics.com I tested a little got a load at 3300fps thats just under 1/2"with there 140gr J36 man they are flat shootingcomparedsome other bullets I havetried.