??? amounts of POWDER???

[Wyoming Mike]

that makes sense !I understand those who use two different loads , but my reasoning is pretty much the same as voyageuer`s . helps you learn about kentucky windage and tennesse elevation !

I get enough of kentucky windage shooting in Wyoming.  Much of the time I am compensating for the wind out here.  The only time I really use tennesse elevation is to shoot silhouettes and some long range gongs.  I have one rifle that is great out to 200 yards.

[Hanshi]

Perhaps, Hanshi you have got your 'vibs' in tune wiff the smokepoles harmonics 

I like that!  It's my excuse from now on!

[big_jake57]

I'm a bit late chimin' in on this, but here's my take.
I used to spend alot of time target shooting (mostly 25-50 yards) and did indeed find double loads for my guns.  When working up a load I always found that the sweet spot was a lighter load than I cared to use for hunting or longer distances. This was when I used a larger cal. (.50 and .54) gun for all shooting. It is my experience that the lighter load is the most accurate when you really get picky.  For instance, I have a .54 GPR flinter that shoots great with 45gr 3f, .535 ball and .015 pillow ticking patch cut at the muzzle.  The next best load I found is 90gr 3f.  However, that load at the same distance will not group quite as well as the 45gr  load, however it is better at 100 yards, and is a deadly hunting load. The lighter load is alot more comfortable to shoot, and obviously less costly.   (Although the recoil of the hunting load sure feels good in the timber with a deer in the sights, feels like..... power)
I've found the same results on all my other guns, in small caliber as well, although, on a small cal varmint or target rifle the most accurate load is all thats needed anyway. For instance, my .32 is optimal at 30gr of powder, and both my .40s are happy in the 40 gr range, which is fine for squirel and paper anyway.  I just experimented with them because it was fun to do anyway.  I've discussed this with many fine shooters (aka, the guys kickin my rear at shoots) and they have found the same results too. 
Ofcourse, this is only my 2 cents worth, and your mileage may vary.

Jake