Vihtavuori shotshell loading data

[nuclearcal]

Anybody have loading data for 12 GA loads using Vihtavuori N-300 series powders? Interested in N320 thru N350

 

[straycat]

vihtavuori powder

Try Graf and sons website,they are the only ones I know about that have any data.If they don't have what you need they might point you in the right direction.Good Luck,Joel