300WM N560 Need help load data

[kickerz24]

I have some Vihtavuori powder in N540, N550, N560, and N570 and would like to use one of them in my .300 Win Mag. Currently I have some 180g Nosler Ballistic Tips I want to work up some loads for a Ruger MK77 however I can not find any load data on for the 180g BT bullet using any of the Vihtavuori 500 series powder. Could anyone help me out with some load data and/or recommendations?

Thanks

 

[wildgene]

http://www.vihtavuori.com/en/rifle-reloading-data

 

[DrMike]

http://www.vihtavuori.com/en/reloading-data/rifle-reloading/-300-winchester-magnum.html

http://www.vihtavuori.com/en/reloading-data/rifle-reloading/rifle-reloading-data.html

 

[kickerz24]

http://www.vihtavuori.com/en/reloading-data/rifle-reloading/-300-winchester-magnum.html

http://www.vihtavuori.com/en/reloading-data/rifle-reloading/rifle-reloading-data.html

Thanks for the info, I have reviewed this in the Vihtavouri manuals but I do not see a 180BT Nosler bullet in the link, Do I use the info from one of the other brand bullets for loading the Nosler BT? The only thing I see close is a 190g Sierra BTHP.

I do see a Nosler Partition 180g but there is no 500 series powder listed, only the 100 series.

Thanks

 

[DrMike]

Consequently, kickerz24, welcome aboard. Always glad for the company. Yes, use the data for either the Partition in the same weight. Drop back at least 5% and work up to a safe maximum. I really can't be more helpful at the moment as I am rebuilding my computer and some functions are not ... well, functional! :? However, use the pressure tested data provided in the link for the Partition, watching for signs of excessive pressure as you work toward a maximum.