.22 hornet works well with capercaillie, which is a grouse of up to and even over 11 pounds. I know that is smaller than an adult tom, but this may be of some interest anyway. Even in .22 hornet, FMJs are best for saving the meat. Round nosed FMJs are far superior to pointed FMJs for quick kills, even if that would mean they strike with somewhat lower speed at longer ranges. Some guys use soft-nosed bullets for shots much over 100 yards but I have been fine with round nosed FMJs.
I have shot a lot of capercaillie with .222 rem and 6,5x55 as well. Then it is strictly FMJs and most .222 rem loads are a bit too hot and may actually blow a bird to pieces at times, probably often due to tumbling bullets after hits in branches or bone. The 6,5 is nice but again stay away from pointed FMJs as they do not kill instantly.
A very popular option for capercaillie up to 100 yards or a little longer is the 7mmx33 Sako. It shoots a slow round nosed FMJ that will drop a big capercaillie like-and I quote my hunting buddy-"a plate of porridge". Do not ask me where he came up with that. But to me that pretty much sounds like the out-of-a-tree equivalent of "bang-flop".
This is a big issue over here as we rifle shoot a lot of these bigger grouse and do it for meat. If you hunt in cover and expect shorter ranges, maybe up to 130 yards or so, there is little doubt. Go slow, accurate and round nosed FMJ and you will kill clean and ruin little meat. Faster will give you range but starts to blow up close birds. Pointed bullets won't kill clean. Expanding bullets damage the inside-good for furbearers, bad for tasty birds.