NORMA Powder and reloading data

Im trying to duplicate NORMA .280rem 170gr. VULCAN ammo. I cant seem to find it locally anymore and my rifle seems to love that load.

Ive got the cases and bullets and am just trying to figure out what powders to try that will bet me close to the factory load.
 
RE#15=N203 RE#19=N204 RE#22=MRP The Reloader series are sold as improved versions of the above.The Letter from the Norma Company executive confirming this recommend reducing loads 10% and working up when interchanging data for these powders.
 
mbogo3 said:
RE#15=N203 RE#19=N204 RE#22=MRP The Reloader series are sold as improved versions of the above.The Letter from the Norma Company executive confirming this recommend reducing loads 10% and working up when interchanging data for these powders.
Click to expand...

Any idea were I can find this letter from the company executive?
 
mbogo3 said:
RE#15=N203 RE#19=N204 RE#22=MRP The Reloader series are sold as improved versions of the above.The Letter from the Norma Company executive confirming this recommend reducing loads 10% and working up when interchanging data for these powders.
Click to expand...

I doubt it. Reloders are not better than Norma's powder, quite the opposite in fact. Norma MRP is cleaner and better than Reloder 22.
 
RT said:
Any idea were I can find this letter from the company executive?
Click to expand...

Use your google-fu powders. It's out there. The letter was addressed to Dave at Old Western Scrounger from Hercules Powder itself. I'd post a copy of the letter, but I don't know how to do that. Don't forget that Norma doesn't make their powder either. They are ALL made by Bofors. The letter also cross-references those powders to RWS powders as well.
 
I have long been a user of Norma powders, and I assure you, they are not identical to any
Alliant powders. Close, but not the same. Reloder 22 and MRP are similar in burning rate, but do not
even look the same under high magnification. Ditto N204 and Reloder 19.

The original N203 has been obsolete for decades already, replaced by N202. Now we also have N203B,
which is also different. None are the same as RL 15.

At present I have and use N200, N201, N202, N203, N203B, N204, MRP, URP, and MRP-2.
One thing I really like about Norma powders is they tend to not be "spikey" as to pressure
rise. MRP seems less Temperature sensitive than in RL 22, in my experience.

I phoned Nils Kvale a few years back and had a nice chat with him. He told me that MRP
[and it's predecessor, N205] were made by Bofors, and marketed as RP-5 N203 as RP-3. Dave.
 
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