Cleanest burning powder for 308 W

[artbosco]

I would like to hear your opinion as to the cleanest burning powder for 308 W. My requirement is due to long string of fire at 300 metres. High velocity not a requirement. thanks Filippo

There is a long list of powders here: http://www.accurateshooter.com/cartridge-guides/308win/ that have proven to be propellants for achieving accuracy in the 308, given that you do your part.

Your barrel will tell you which one it likes. Don't let cleanliness of the powder requirement supersede what will give you the best 300 meter groups. Vihtavouri N150 is on the list, and the Lapua powders have given me cleaner barrels when that powder was proven to be liked by my barrel.