Have folks been collecting data on the 300 RUM using Vihtavuori N170, 24N41, or 20N29? Specifically, I'm looking for data with these powders and the 200g Accubond. Just curious if anyone has played around with them. Thanks.
I would try something a little faster with that round. Those powders were made for the .50 BMG and 20mm Vulcan. According to the VV manual N165 and N170 would be a little better.
Hmmm...N170 and 24N41 was what I was thinking to for the 200g and up. I can get the N170 locally, but have been having difficulty tracking down 24N41. My understanding is the N170 is temp insensitive, but does anyone know about 24N41? Or, is it like H870 in warmer temps?
Yeah, I've seen that data, and if you look at the VV data for the 30-378 Wby, it is exactly the same as for the 300 Lapua Magnum. Is this a misprint? I find it hard to believe that those two cartridges could have exactly the same numbers for powder amounts, bullet weights and velocities across the board. They even mention different length barrels and twist rates...so I do not have a high degree of confidence in the numbers because I'm not sure which gun they are for.
I have used both N 165 and N560 in 338 LM, N560 gives lower pressure at a given velocity. I would try N560 in 300 RUM although I have no first hand experience on N560 temperature sensitivity yet. But it shouldn´t be bad.
Petander, Thank you for bringing this to my attention. I had printed out VV's on-line reloading information last fall and that is the one that had the same data for 30-378 Wby and the 300 Lapua Mag. VV now has new (1/2004) reloading information. My mistake. Sorry guys.
Are VV N100 powders temp insensitive as the Hodgdon extreme powders are supposed to be? I thought that they were and now I am reading some information that suggests they are not. Does anyone know?