I've been shooting 100 grain Noslers with IMR4831 for a long time now with emphasis on accuracy and have not worried about velocity.

Now I am going to try GS Custom HV 100 grain and Lost River J36 90 grain bullets.

I am going for absolute top velocity.

Does anyone have a powder recommendation for the highest velocity?

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Ignorance is curable, but stupidity is terminal.

I'd look at RL 22. I've had good results with it. You might also try IMR 7828. That one I have never tried in that case.

Have been using the 90 grain HPBT for years and still use 4831, which is a great powder for the .25-06 and most of those have a longer barrel 26-28". If you want more velocity add more powder and check your primers for pressure. Check what you are doing on a chrongraph if you have the use of one. If not come down to Florida and shot thru mine. Good Luck

Ol'Sarge... now dont go crank'in up your scope and shooting whitetails at 600 yards or you will make me mad!!
I have used the 90 & 100 gr X in my 250sav,25-06 and 257 wby on several of my hunts with realy good results... tell me how those GS HVs work.

I would agree with RL 22. I've hsd top velocity and accuracy with RL22 and 100 gr & 115 gr nosler BT's.Best accuracy was with Win 120 primers.Tried Fed,CCI & Rem mag primers and groups really opened up with all the mag primers.

Thanks guys,
As all my reloading books were 10 - 15 years old, I didn't know what was out there. I thought maybe some new powders may have improved velocity.

I stuck with 56.5 of IMR4831 because going up opened the groups up. Never chonographed them, but they are probably near max already.

Will give RL-22 a try.

smallfry, Don't worry, varmints and paper are the only intended targets when the distance gets beyond 450 yards.

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Ignorance is curable, but stupidity is terminal.

i have reached 3475 with accurate-3100,but i much prefere 3350 with imr 4831.speed dont matter if you dont know where its going.

I echo RL 22 and add RL 25. 57gr of RL 22 would yield 3400 fps with the 100 gr BT, in my Savage Tactical 25-06 Rem.

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"If guns are outlawed...only outlaws will have guns!

"We should not say the Greeks fight like heroes. We should say that heroes fight like Greeks"... Winston Churchill