"....I have shot deer in the shoulderwith a 30-06 and also with a 338 win and have seen them buckle anddrop like they were electecuted. I noticed the shoulder shots and spine shots cause this...."
On one hand, those are both serious cartridges for whacking power. On the other hand, deer aren't for much in the toughness department and kill easy.
Fine cartridges for deer though and certainly work well for elk as well.
My kinda guy.