i read some sales figures a few weeks back which confirm the stats i read in an article (a survey of folks who hunt) in either field and stream or outdoor life maybe a year ago.
number one rifle - remington model 700 (by a very large margin) number one caliber - 30-06 (by an even larger margin) most popular scope (read as best selling) - 3x9x40 caliber is .30 obviously load - which ever shoots best in that rifle - i suspect most folks just get a box of either corelokts or power points from their local sporting goods store.