I don't care what bullet you use in your 270, for thick timber a bigger bullet is better and thats why I also rebarrelled my 270 to 35 Whelen.
Can you explain to me why a "bigger" bullet is better in thick timber. I have seen a lot of studies, and none have shown that a bigger bullet bucks brush any better than a smaller one. In fact I have seen studies that show the opposite effect. A bigger bullet is more likely to hit a branch due to it's larger diameter. and once a branch is hit, they all deflect.
Is there a dynamic here that I'm not aware of?