My greatest concern about the Hammer in my .22 CM on a really big hog is penetration with enough force left to drive through vitals if the angle wasn't perfect. Let me explain: I am running a 7 twist. The heaviest Hammer Hunter that will stabilize in a 7 twist is 73 grains. The Hammer Hunter, I believe, is the iteration that retains the most weight after the shedding of the petals - 80%, I think? If I lose another 15 grains (about 20%) of the 73 grain bullet, even with the correct shape and 3500 ft/s, how far exactly would 58 grains of remaining .22 cal bullet be able to travel in a huge Russian boar over 500 lbs?
I have them on hand. I will load them and shoot them. Even hunt with them (at least once to prove whether this small of a separating projectile can be instantly lethal on large, tougher critters). I have not tried them yet, and I have heard all the rave reviews of how well they perform. I'm just a little more nervous about this small of a bullet penetrating extremely dense muscle, extremely thick bone, and a 1" armor plate of bone on either shoulder.
I have 117gr .277 cal Hammers that I will run in my newly designed wildcat (.27 Creedmoor with slightly shortened throat to optimally hold bullets up to 130 grains - I call it the .270 SDC, or Southern Deer Cartridge, built to use readily available components and be a force for deer out to 500yds). I would not hesitate to load this combination for large hogs.
I have faith in the design and reported performance, but the laws of physics are what they are. I want to try some of the 73gr Hammers vs some of the 78gr Barnes TSX on big hogs. The rifle REALLY liked the Barnes on the first and only group the rifle has shot to date. It will be hard for the Hammers to top the accuracy I got that first go. They may be just as accurate, or could be better on average, but the truth is in the terminal performance. The Barnes will retain about 73 - 74 grains of it's original grain weight. (Potentially) The Barnes can shed petals, too, at high velocity, and is considered bad if it does. Hope to find out!