Thread: Superformance powder

looked at using it awhile back for mates .308...we nearly came to blows over it as I wouldnt load as was asked to as wasnt prepared to take risk when no data was present.....from memory its said to be good in .308 with heavy weight bullets.....so be interested to know how its going to be good in .260.....
where its good its very good but the band of goodness seems to be slim.