I think the weight charts are bogus -- they don't take into account your body type or your body fat percentage.
Calipers to measure your body fat are available for the grand sum of $17, including shipping. You can get a pretty good measurement -- certainly much more accurate than any scale will give you - from a single site on your body, the suprailiac skinfold. Along with the calipers, you'll get a conversion chart. Nothing could be easier.
Once you have your body fat pctg., you can get your lean body mass. From this, you can calculate your goal weight.
Example from my stats: current weight = 244; body fat pctg = 28
fat mass = 244 x 28% = 68.3 lbs.
lean mass = 244 - fat mass = 175.7 lbs.
my target body fat pctg = 11.7%
my target lean pctg = 88.3%
goal weight = lean mass / 88.3% = 175.7 / .883 = 199 lbs.
What this formula tells me is that if I don't want to be quite so aggressive on the body fat pctg., and I go for 17%, my goal would be around 212 lbs.
For a man my age, 17% body fat is still considered "lean", so that would make me quite proud.
The lean body fat pctg for men depends on age. If you're 20 yrs. old, it's 7% or less; of you're 58 like me, it's 19% or less. For women, if you're 20, it's 18% or less; if you're 55 +, it's 26% or less.
By the way, this also shows what's wrong with BMI, which after all, is nothing more than an index based on height and weight, and also doesn't have anything to do with body type or lean mass. If I got down to my 17% body fat at 212 lbs., I would still have a BMI of 28, which is considered overweight.
In reality, of course, as I get closer to my goal, I will have lost some of my lean muscle mass as well. I'm trying to prevent that by losing weight slowly (about 3 lbs. a month) and doing a full body weight routine every 4 days. But some of it is bound to go. That will mean I'll have to recalculate as I go along, and it's possible that a 17% body fat percentage would mean 205 lbs. as my lean mass decreases somewhat.