Accurate # 2

Hi All,
I acquired 5 pounds of Accurate # 2 Powder and would like to load 357, 41 and 44 mag target loads with it. All using lead bullets with velocities between 900 and 1000fps. I can't seem to find any reloading data for this powder in magnum cartridges. I see it is next to win 231 in burn rate chart. I guess I could start there.
Has anyone here used this powder in magnum cartridges, and what starting load did you use? Thanks Key

.357 Magnum
Barrel length: 6 inches
Primer: CCI 500
Case: HDY
158 LSWC AAC-2 4.0 864
158 LSWC AAC-2 5.0 1,008
158 LSWC AAC-2 7.2 1,229
158 LSWC AAC-2 8.0 1,296
Remarks: SWC seated with front driving band flush with case mouth

.41 Magnum
Barrel length: 9.5" Wilson test barrel
Primer: CCI 300
Case: Win
210 LSWC AAC-2 9.2 1,315
Remarks: Reduce listed load by at least 10 percent for a start charge

.44 Magnum
Barrel length: 7.5" Wilson test barrel
Primer: CCI 300
Case: Win
250 LSWC AAC-2 5.0 838
Remarks: SWC seated with front driving band flush with case mouth

.44 Magnum
Barrel length: 7.5" Ruger Redhawk
Primer: CCI 300
Case: Win
240 LSWC AAC-2 10.0 1,280
300 Lead SSK AAC-2 9.5 1,138
Remarks: Reduce listed load by at least 10 percent for a start charge