[brinan]

Let's add some substance (albeit derived from a small sample).

A) Range analysis (using Holdem Manager and Excel) based on:
1 Sample of hands played by "winning" players during August.
2 Specifically, those players whose pre-flop raising frequency is >12.7% and <= 15.1% (percentage range represents mid 30% percentile).
3 Hands all involved 6 players playing $1-$2 no-limit at 6-max tables located at one particular site.

B) Estimated Range Distribution for Big Blind Position
1 Pre Flop Raise (7%, VPIP 14%)
45%.........88+
40%.........AJ+
11%.........KJ+
4%..........other

2 Re-raise (5.3%)
50%.........99+
42%.........AQ+
5%..........KQ
3%..........other

3 Cold Call (11.3%)
25%.........88-22
24%.........AJs-A2s
21%.........J9s+, T8s+, 97s+, 86s+, 75s+, JT-76o
=70%
12%.........KJs+, KQo
8%..........AQ-ATo
4%..........JJ-99
7%..........other

C) Usage
1 Analysis repeated as more hands come in (and this helps to embed into memory).
2 Starting point where players fitting profile unknown.
3 Ranges individualised as players fitting profile become known.

D) Note
1 Sample size for this profile is 30 "winning" players (minimum number of hands for each player is 1,000).
2 Analysis carried out for other positions, and for upper/lower 35% percentiles.
3 Not claiming calculations are error free, nor analysis devoid of improvement.

D) Finally
Point being made is you do not have to rely on your own experience.