Bullet weight problem,can any reloader master help?

I weigh all bullets before slamming into the case and this berger bullet on 7mm rem mag caliber for 168 grain was weighing 167.8,167.9 and few 168.1 grains on my RCBS rangemaster 750 scale (a href="http://www.cabelas.com/cabelas/en/templates/links/link.jsp?type=product&cmCat=Related_IPL_216238&id=0028425215505a)" rel="nofollow"http://www.cabelas.com/cabelas/en/templa…/a which is accurate upto +/- 1/10 grain.Will this difference of .2 grain will have any effect on the grouping at extended range upto 1000 yds or will this type of bullet gonna act different than my ballistic chart says excluding temperature, humidity,altitude,wind and other factor/errors?