looking for loads for 90, 95, and 100gr any brand bullet. 26" 1:10 barrel or something close.
I am going to use H4831SC starting out around 47, 48grs.

Really? Then I hope you have a good bunker to hide in, and a long string to the trigger...

For 100's:
H-4831 From 42.0 grains to 44.0 grains
Remington 9-1/2 Primer

thanks steve>
Lees reloading manuel list this powder for a 243 at 48grs. 90gr bullet 46 for a 100gr bullet
sierra, lyman, and a few oters listit at or about the load you suggested.
hoping to get some good feed back for ackley chamber.
and ackley list 4831 max at 48grs with a 100gr bullet but it doesnt inply wheather it ia IMR or Hodgons

Did you checkout http://stevespages.com/243_26.html

Yes, I am finding quite a lot of diffrent min and max for this powder H4831sc.
Using the rule that the max load for a 243win is usually the starting load for a 243AI.
I am going to back down to around 45grs for the 100 and 46gr for the 90gr bullets.
still would like to hear from anyone who has developed loads.

HI VELOSITY

243 AI LOADS ARE AVAILABLE AT http://www.geocities.com/graymist44/ackley243.html OR http://www.duanesguns.com CLICK LINKS AND GO TO JEFF MILLENDERS 243 PAGE.

HOPE THOSE HELP YOU OUT.

the second site will probably be the best. the first is for heavy bullets.

GO BUCKEYES.