After God knows how many years of re-creating the wheel, Ive decided that using the top one or two powders recommended by those who have 'been there' is a great place to start.
I don't know if you are referring to me, But YES I agree, I have been using AA1680 and a 180SSP bullet in the maxi for a very long time... Before the "357 Maximum in Indiana" web site came to be or before many guys here as well. When I find a great loading, I stick with it...
Just a few of my favorite powder/bullet combos that will never change...
IMR4350 in the 30/06 & 243
H4831 in the .270 & 280
WW748 in the 30-30
RL7 in the 375Win
AA1680 on the 357Maxi
IMR4198 in the 45-70 & 444
H380 in the 22-250
IMR4064 in the 8MM Mauser
H322 in the 223
H335 in the 7mm/08
AA2460 in the 35REM
Red Dot for light 12Ga
Blue Dot for heavy 12Ga
and I have two favorites for my 35 Whelen...RL15 for the 225 and up, heavy weights and AA2520 for the 200Gr bullets.
All of these sans the RL15 Whelen loadings have been found many years ago and remain top performers in many firearms.
CW