Just thought I'd share the great news, (at least to me it's great).
Cut n paste from their website:
Reloder 10x�s burn speed falls in between Alliant�s Reloder 7� and Reloder 15�. It is slightly faster than their previously offered Reloder 12. It is the powder of choice for 40 to 50 grain bullets for the 223 and 22-250 cartridges as well as standard applications in popular best rest calibers.

I think this might be the magic powder I've been looking for to load .223 and 45-70.

I'm thinking I might just HAVE to try that under 55-60 gr. bullets in my 6PPC. Dutch.

In the "old" line of Hercules powders (but not as old as Hi-Vel 2), there was a RelOdeR 11 and RelOdeR 21 (yes, that the way they spelled it). These powders were U.S. produced and were not the same as the current Bofors-produced Alliant line.

At first blush, a person might be tempted to interpolate old data from RelOdeR 11 in using the new Reloader 10X. I wouldn't advise this, since it's hard to say how the two powders actually compare. RelOdeR 21 was actually some bit faster than current Reloader 19 and nowhere near as slow as Reloader 22. My understanding is that both the "old" and "new" lines were double-base, I doubt that their chemical properties are that similar.

I just got an email from the Alliant powder people. They gave me some tested loads with reloader 10 that they have worked up so far. They are as follows:
222 Rem

Speer 40 gr SP
Max charge wt. 23 grs, 3346 fps @ 47,494 psi
Rem 6 1/2 primer, tested OAL 2.040 in.

Speer 45 gr SP
Max charge wt. 22 grs, 3163 fps @ 46,394 psi
Rem 6 1/2 primer, tested OAL 2.070 in.

Nosler 50 gr Ballistic Tip
Max charge wt. 21 grs, 3023 fps @ 46,934 psi
Rem 6 1/2 primer, tested OAL 2.110 in.

6mm BR

Sierra 60 gr HP
Max charge wt. 30 grs, 3369 fps @ 45,300 CUP
Rem 9 1/2 primer, tested OAL 2.075 in.

Hornady 70 gr SP
Max charge wt. 29.5 grs, 3206 fps @ 45,920 CUP
Rem 9 1/2 primer, tested OAL 2.145 in.

Sierra 75 gr HP
Max charge wt. 28.5 grs, 3100 fps @ 46,430 CUP
Rem 9 1/2 primer, tested OAL 2.125 in.

Speer 80 gr SP
Max charge wt. 28.5 grs, 3023 fps @ 45,300 CUP
Rem 9 1/2 primer, tested OAL 2.160 in.

223 Rem

Nosler 40 gr Ballistic Tip
Max charge wt. 25.3 grs 3680 fps @ 51400 psi
Win WSR primer, tested OAL 2.200 in.

Speer 45 gr SP
Max charge wt. 24.5 grs 3502 fps @ 51780 psi
Rem 6 1/2 primer, tested OAL 2.200 in.

Hornady 50 gr SP
Max charge wt. 23.6 grs 3319 fps @ 50540 psi
Win Small Rifle primer, tested OAL 2.200 in.

Nosler 50 gr Ballistic Tip
Max charge wt. 24.2 grs 3389 fps @ 52950 psi
Win WSR primer, tested OAL 2.200 in.

Sierra 52 gr HPBT
Max charge wt. 23.3 grs 3270 fps @ 51430 psi
Rem 6 1/2 primer, tested OAL 2.250 in.
I was hoping for some .45-70 data but none are ready yet.

[ 07-03-2002, 23:49: Message edited by: pigman ]

Might be The powder for my 14" .30 Herrett.
AA2015 and IMR4198 get the same velocity at 30.0 and 27.0 but then I run out of case capicity.

I got a second email that said they are currently testing a reloader 10x. He said it would be good for heavy bullets at high speed in .45-70