None of them will "cut through brush", none...

Any caliber can have a sparse blood trail with any bullet used, fat and entrails do a pretty good job of plugging...

If you want to drop them in their tracks, a bullet through the neck or a high
shoulder shot will do the trick...If you want a good blood trail, use a low lung or heart shot and a bullet that will leave an exit...Pay attention to the exit angle so the bullet exits before it hits the guts...

My qualifications???

I've killed over 300 deer with a .243...

I've also cleaned and tracked a few more hundred on our farms where for the past 35 years or so we have killed 40-50 a year with a variety of weapons...

Once you get to a 100 grain bullet in .243, it isn't about the caliber, it's about where you put that bullet...A deer shot in the guts with a 30-06 or 30-30 is just as tough to track and recover as one hit there with the .243...