7MM Mag - Matrix 190 gr. Suggestions

[rowen99]

Have a 7mm mag coming next week and I opted to try the Matrix 190s. Anyone have suggestions on what powders to try and where to start? Anyone tried these 190s?

thanks

 

[MudRunner2005]

I haven't tried the 190's, but if I were to shoot them, I would be looking for a slow burner...Like 7828 SSC.