One thing I have found out with mine. A 270win has a narrow range for powders. And sometimes when handloading you have to think more about getting a powder that properly cycles than an accurate one. Luckily, 4350 works great in mine even though they suggest 4064 in semis or faster. But 4064 would not cycle correctly. I like the 3000fps performance I get anyway from 4350.

I hear the 308 has much more open range for powder and loads.