I use a 7mm rem mag. I also think that the extra power is nice, and I have never really flinched. But I to believe dead is dead as long as the animal has as little suffering as possible use what gets the job done. Use what you like to and are able to shoot accurately. I have had my share of long shots and a few very very close shots the 7 stops them where I hit them thats why I like it no or very little tracking.