Re: Highest B&C bullet for a 12 twist 30cal.
I shoot 200 grain accubonds out of my 12 twist 300 RUM and they stabilize just fine. BC of about .590 Probably not the highest but high enough.
Try the 178 AMAX. I get a SUPER HIGH bc with that one. I dont care what the published bc is. At 3100 FPS and a 300 yard zero that bullet fired from my rifle drops 37.75" at 600 yards. That is real world testing not a computer telling me this. My 200 grain accubonds at 3150 dont hold a candle to that! If you were to use the published bc in a computer program, the velocity has to be around 3465 for it to equal 37.7" at 600 yards. I am working on a load that should reach 3450. I wonder how little the drop at 600 yards would be then??
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.