If you're bench shooting and looking for that type accuracy, then most definitely. I've even had some minor shakes sighting in my gun and recognized the extra movement other than my heart beat. I still got it sighted in, but I won't do that again prior to shooting!
Now if you're hunting deer and your shot isn't to the next county, then I think you'll be ok.
I'd be more worried with you and buck fever, ie, adrenaline rush, and you fillin' your pants. LOL!
Good luck,
iSnipe