VihtaVouri Reloading Data tool

Blkram · Sunday at 10:01 PM

Was looking for some reloading data for Vihtavouri powders over the weekend and found this site. Thought others would like to check it out.

Reloading data tool | Vihtavuori

Vihtavuori has developed a new online search engine to make reloading data even easier to access! Our new reloading data search tool enables you to search for

vihtavuori.com

8mm Enthusiast · Sunday at 10:36 PM

Bookmarked! Thanks!

TEXASforLIFE · Sunday at 11:51 PM

I have it on my fone and computer for nearly 10 years. Some data changed over the years but 2grs in 308win. Make sure you save a file or a download cause updates will lose info. On other forums some say their data is accurate within a degree (+/- fps).

truck driver · Monday at 5:23 AM

Nice but wish it included cast bullet loads for pistols.

Brobb · Monday at 7:12 AM

It's a good guide for what powders they recommend for calibers. For quite a while, I've been using Alliant in nearly all the guns I reload for but have been experimenting with these powders more as Alliant powder becomes less available. Even these powders don't seem readily available where I'm at and it seems, if I buy a pound and like what I see, it might take a while before seeing it again. The frustration of reloading for me lately.

I'm currently only using N560 full time in my 300 prc, it lists a max load at 72.7 grains. I'm loaded at 75.1, not seeing pressure signs and GRT program shows it to be right at 65k psi. Another interesting this I noticed, which is a topic for another thread. The load I shoot was 2957 fps average over 2 bottles of powder. I picked up 2 new bottles and the same load with the powders from a different lot are 50 fps slower on average after 20 rounds. I never seen that much variance between lots of powders before.

michsteve · Monday at 4:51 PM

I have not used it yet because it did not have my bullet in the database for 45/70 with the nosler ballistic silvertip but could use the sierra hollow point as a starting point. I can use it for the Hornady 350 grain round nose though.

SJB358 · Monday at 5:29 PM

Cool tool. Thank you.

salmonchaser · 2026-10-27T04:10:11-0700

Brobb said:
It's a good guide for what powders they recommend for calibers. For quite a while, I've been using Alliant in nearly all the guns I reload for but have been experimenting with these powders more as Alliant powder becomes less available. Even these powders don't seem readily available where I'm at and it seems, if I buy a pound and like what I see, it might take a while before seeing it again. The frustration of reloading for me lately.

I'm currently only using N560 full time in my 300 prc, it lists a max load at 72.7 grains. I'm loaded at 75.1, not seeing pressure signs and GRT program shows it to be right at 65k psi. Another interesting this I noticed, which is a topic for another thread. The load I shoot was 2957 fps average over 2 bottles of powder. I picked up 2 new bottles and the same load with the powders from a different lot are 50 fps slower on average after 20 rounds. I never seen that much variance between lots of powders before.

I actually saw the same velocity loss with a new batch of N560 I bought for my 300 HH. Plus a couple of grains of powder also to hit just under 3grand with a 180 AccuBond using Vit’s load data.

truck driver · 2026-10-27T04:42:48-0700

Brobb said:
It's a good guide for what powders they recommend for calibers. For quite a while, I've been using Alliant in nearly all the guns I reload for but have been experimenting with these powders more as Alliant powder becomes less available. Even these powders don't seem readily available where I'm at and it seems, if I buy a pound and like what I see, it might take a while before seeing it again. The frustration of reloading for me lately.

I'm currently only using N560 full time in my 300 prc, it lists a max load at 72.7 grains. I'm loaded at 75.1, not seeing pressure signs and GRT program shows it to be right at 65k psi. Another interesting this I noticed, which is a topic for another thread. The load I shoot was 2957 fps average over 2 bottles of powder. I picked up 2 new bottles and the same load with the powders from a different lot are 50 fps slower on average after 20 rounds. I never seen that much variance between lots of powders before.

That is why we buy 4lb jugs of powder at a time even for reloading pistol calibers. Yeah, it's hard to justify the cost at the time but it pays off in the long run.
I buy 1pounders to experiment with and when I find something that works I invest in the 4 pounders and use the remaining 1lb for practice.

SJB358 · 2026-10-27T06:16:38-0700

salmonchaser said:
I actually saw the same velocity loss with a new batch of N560 I bought for my 300 HH. Plus a couple of grains of powder also to hit just under 3grand with a 180 AccuBond using Vit’s load data.

I’m never surprised to see a velocity swing of even a 100fps between lots of even the best powders known. It happens. Nowadays I expect it and adjust accordingly.

Back when I got my first Mashburn I developed a load with 160 ABs and H1000, the load clocked right at 3200. Next bottle was 3050. The reason I figured it out was accuracy kinda went to hell and I was scratching my head. Checked it on the chrono and loaded back to 3200 and all came back to good.

Sometimes accuracy will remain fine and the speed will never be noticed on stuff that isn’t shot real long, but it’s always worth checking and with a Garmin or Athlon along these days, it’s easier than ever.