Barnes bullets the 275gr TSX specifically does wonderfully in the 450 Bushmaster. I am only getting roughly 2 MOA out of them (mostly likely my gun not the bullet) but everything I shoot at never takes a step. Better accuracy is always nice but in reality it's hard to get much over 100 yard shot on the property I hunt in middle Tennessee.
100 yard 5-shot group just a touch over 2-MOA. Works for me.
This bullet went through a raccoon at ~18-20 yards and then about 3 feet of soft loamy forest floor. The bullet track under the leaves looked like a roided-out mole dug it. 100% weight retention and beautiful expansion. Given what it did to the racoon most of that expansion happened in the raccoon, cause there was not much left in the raccoon after the bullet exited.
I have shot several armadillos with it, the most notable being a Texas heart shot at ~35-40 yards with the bullet, in just above the tail, exited through the left cheek and split all nine bands of that 9-banded armadillo.
I did finally take a deer with it and I purposely took a head-on shot hoping to recover the bullet. Bullet went in behind her left ear, broke her neck, two ribs going into the chest cavity and exited just in front of her left hind leg. She fell right in her tracks and never moved. I went back two weeks later with my metal detector and found the bullet, it had penetrate about a foot of dirt. It did loose one petal but still retain ~95% of its weight.
I am not pushing these real hard my load is near the bottom of the published data for this bullet in 450 Bushmaster. I am getting about 1850 fps from a 20-inch barrel. Recoil is mild with my fixed stock, and super cell recoil pad.
Its going with me this weekend as my backup gun. 30 RAR, 450 Bushmasters little brother, is getting primary duty.