to Vihtavuori N150?

Reloader-17 would be close.

I always thought it was close to IMR4350. Check one of the burn charts online.

Hodgdon's chart shows it about halfway between 760 and IMR 4350.

No, there is no equivalent in the sense that RL22 and Norma MRP are the same powders with different labels, or that WW760 and H414 are the same powders. VH-150 is not sold under any other label.

Vv N550 come close.

Powder name
Powder Heat of explosion,
The energy content per unit mass of specified powder.
Hot to Cold
VIHTAVUORI 24N41----3785
VIHTAVUORI N150 ----3780
Alliant Reloder 23--3770
VIHTAVUORI N130-----3770
------------------------
Powder name
Ratio of specific heat,
The ratio of consent pressure of specific heat to constant volume of specific heat.
Hot to Cold
Alliant Reloder 25---1.2410
IMR 4831 SC---------1.2410
IMR 7828 SSC---------1.2410
VIHTAVUORI N150------1.2410
VIHTAVUORI N560------1.2410
----------------------------
Powder name
Burning rate factor, The burning rate coefficient during combustion of powder.
Fast to Slow
NORMA 200--------0.5550
VIHTAVUORI N150--0.5450
Hodgdon CFE 223--0.5330

HTH,
Don

FYI,
This info is from a well known reloading program,
that get it's info from the powder company's and tests using a closed bomb vessel and other testing equipment.

As you can see, these powders are close,
but NOT the same,
except for the Win/Hodgdon powders.

Powder name
Powder Heat of explosion,
The energy content per unit mass of specified powder.
Hot to Cold
NORMA MRP-----------4020
Alliant Reloder 22--3990
------------------------
Hodgdon H 414---3880
WINCHESTER 760--3880
===============================================
Powder name
Ratio of specific heat,
The ratio of consent pressure of specific heat to constant volume of specific heat.
Hot to Cold
NORMA MRP-----------1.2350
Alliant Reloder 22--1.2480
----------------------------
WINCHESTER 760--1.2450
Hodgdon H 414---1.2450
================================================
Powder name
Burning rate factor, The burning rate coefficient during combustion of powder.
Fast to Slow
Alliant Reloder 22---0.3860
NORMA MRP------------0.3690
---------------------------
WINCHESTER 760---0.4529
Hodgdon H 414----0.4529

Tia,
Don

nvreloader224 what program does that information come from?

Ray

It is called QuickLoad,
see info here;
http://www.6mmbr.com/quickload.html

Tia,
Don