Has anyone actually made the jump from Norma powder data or RWS powder data to the Alliant Reloader series powders? I need to do that because I have used Norma powders almost exclusively in certain cartridges for over 30 years, and now that Norma powder is becoming so hard to find, I guess I need to shift gears. Anyway, I've just loaded up my first experimental loads in 9.3x62mm, crossing from N201 data to RL-15. Wish me luck.

LLS

Reloader 15 is a much slower powder than N201.

If you start with a charge of Reloader 15 which is the same weight of a maximum load of N201 you can expect to be be way down below maximum pressure.

Montero

This is the letter that is referred to in the Norma Manual - any good ? thread but the graphic is no longer showing in that thread. The file was originally posted by Richard Saloom and I saved it. Since this letter was written, Norma 203-B has replaced Norma 203.



Originally posted by Richard Saloom with the letter:
This is a copy of the letter sent out by OWS with my copy of Wiederladen. The scribbling on the bottom is mine.

NOTE: Read the last paragraph of the letter carefully. Good advice about reducing charges and working back up.

-Bob F.

quote:

Originally posted by sierra2:
Has anyone actually made the jump from Norma powder data or RWS powder data to the Alliant Reloader series powders? I need to do that because I have used Norma powders almost exclusively in certain cartridges for over 30 years, and now that Norma powder is becoming so hard to find, I guess I need to shift gears. Anyway, I've just loaded up my first experimental loads in 9.3x62mm, crossing from N201 data to RL-15. Wish me luck.

LLS

From Norma's web site:






For the 286 gr bullets, notice that the 203-B data and the RL-15 data are both right at 58 grains.


-Bob F.

Thanks guys, especially Bob F. So far I've been thru 57.0 grains of RL-15 with a 158 grain bullet with no problems and 2445 fps per my Chrony. Loaded up 57.5 gr and 58.0 gr for the next test, as soon as the weather stops raining. No pressure signs yet.

LLS

I have a copy of this same document.
LLS

quote:

Originally posted by BFaucett:
This is the letter that is referred to in the Norma Manual - any good ? thread but the graphic is no longer showing in that thread. The file was originally posted by Richard Saloom and I saved it. Since this letter was written, Norma 203-B has replaced Norma 203.



Originally posted by Richard Saloom with the letter:
This is a copy of the letter sent out by OWS with my copy of Wiederladen. The scribbling on the bottom is mine.

NOTE: Read the last paragraph of the letter carefully. Good advice about reducing charges and working back up.

-Bob F.

quote:

Originally posted by sierra2:
Has anyone actually made the jump from Norma powder data or RWS powder data to the Alliant Reloader series powders? LLS

I have no information at all regarding RWS powders, and have never seen a source for such info. However, regarding "equivalency" of Norma and Alliant stuff, I have "been informed" that RE 19 is "the same as" N204, RE 22 is "the same as" Norma MRP1, and RE 25 is equivalent to the relatively new Norma MRP2.

I have used N204, Norma MRP, and RE 22, but not RE15 or RE 19. My experience indicates that MRP data and RE 22 data is pretty much the same in the 7X57mm Mauser case using 175-grain bullets with each powder. Naturally, you start with starting loads (10% below any published max load) and develop individual loads for YOUR individual rifle, JUST AS WITH ANY POWDER.

As far as I can tell, there is NO WAY you could put enough RE 22 into a 7X57mm Mauser case with any bullet of 175 grains or less and have excessive pressures...the case just won't hold enough. In addition, I believe Norma MRP occupies less space in the case than an equal weight or RE 22, so they ARE NOT EXACTLY IDENTICAL POWDERS, at least not in density!

In the 6,5x57R 7x57 and .375H&H same loads of N203B and Re15 have produced the same velocities, the same level of accuracy and the same point of impact.
Pressures were not measured, though but in my opinion both powders are the same powders.
As is always the case, even when loading the same powder but from a different lot: START LOW.
Montero

Thanks guys. Worked up to 58.5 grains of RL-15 in my 9.3x62mm, just beginning to see pressure signs, flat primers anyway, nothing serious. Velocity is 2475 fps with the 258 grain RWS H-Mantle, which is hanging in there with the reported values from assorted sources. That's also slightly more powder than a one for one match with N201, so, Montero is right too. These powders are close, but not exact. Start low and work up, and since I am a knew convert to chronographs, using one of them adds another level of safety.
Thanks again,
LLS