I bought a Bushmaster rifle in 450 when they first came out around 2007, mounted a NF 2.5-10x24 compact scope on it in a Armalite QD mount.
Got a hold of 4 or 5 hundred 245 gr Barnes copper bthp bullets and built a load with WW-296 powder, IIRC they chrono a bit over 2400 fps, have never recovered a bullet from deer or pigs, it puts the smackdown on game of this size within it's range capabilities.
NH-K9 used it on a Tennessee pig hunt to pole-ax a nice hog, I believe it was one shot one kill too with no bullet recovered.
I love mine, it does home defense duty when not in the woods, it's in the back with three 30 round converted AR mags bracketed together, each mag holds about 12 rounds of the 450B.
