They don't notice. A well placed shot is far more important than any cal. and as for getting close or for having that excellent oppertunity for that perfect shot comes down to the skill as a hunter. As my grandfather used to say, "It's not the gun, it's the gunner." And that from a farmer that lived during the depression that hunted so his family would be able to eat (cattle were money not for food).I remember as a kid on the farm (long time ago when there was little to no regulations) being given a couple of .22 rounds and a oldsingle shot rifle and being expected to harvest an animal. Times were tough and I know that times have changedbut skill as a hunter determines the hunter that fills the freezer consistantly, unless of course you are paying the big bucks for a guide and a game farm, which is just fine if you have the bucks and that type of hunting is your cup of tea. Sorry if this postcomes across astoo strong but I see far too many hunters out there that their expectations mirror what they see on TV or on hunting videos. Just an opinion from a guy whose family still hunts as a lifestyle and not a sport.