RE: Sonic heads
I switched to the 100 grain Buckmasters.. No success with them in game but we did a antelope archery hunt and we did let loose a few arrows that didn't hit the mark due to bad range estimates and twitchy animals.. in any case the heads stayed together when recovered from terra firma.. And some terra was pretty firma, like rocks.. Expected edge damage but the heads stayed together. I am fully confident that they will do as expected..
Oh and they fly well.