LBR, I guess it is a matter of preference.

I have taken down a 1400 lBS Bison in South dakota with my self made 50#hickory/bamboo bow and using zwickys, the animal walked 20 yards and tumbled over.The Arrow came out of the other side almost 10 inches

I have also shot in argentina a 7X7 red stag probably around 800 lbs with the same equipment through and throughand a grizzly that measures 91/2 feet also through and through.
Of course being a taxidermist has taught me how to sharpened any knife or blade, these things are so sharp they slice paper like a scalpel.

So you guys use what you feel comfortable with.

Iam now making heads of my own similar to the Grizzleys but wider on back, out of stainless steel, I have only shot one pig but a small one this past weekend and went through the lungs and out the side of the face, only ran 10 yards.I'll let you know when I get a big animal with them.