I did the brush test years ago when I was young and dumb and didn't believe stuff I was told. I of course back then used center fires. We were told to hunt deer in northern michigan woods you needed a brush bucking big bore round nose bullet. I didn't have or know any one with a 35 Remington so it didn't get tested. A 30-30 Winchester 94, 308 winchester in a Remington 700, and a 243 winchester in a Remington 700. My test showed that the slow heavy bullets deflected easier in smaller brush than the 243 did. The bigger slow heavy bullets were able to shoot thru some 3 and 4 inch trees that the 243 couldn't.
I called it a wash but do use the smaller bore when shooting could happen in tag alders. And the 30 cals when hunting in the Hemlocks where there are lots of small sized trees.

Al