Just had an email from Lapua in response to an enquiry as to what powder they use in their 308 target ammo; rather surprised...apparently it's N540. ...I don't fancy their supposedly 'cool burning' double base powders .....largely because I don't believe a higher energy powder can be made to burn cool.... [ QUOTE ] These High Energy powders are made from extruded powder grains which are enhanced with Nitro-glycerine, resulting in a denser, more energetic propellant. [/ QUOTE ] [ QUOTE ] Although these new powders have a higher energy content, they do not cause greater wear to the gun. This is because the surface of the powder has been treated with an agent designed to reduce barrel wear. [/ QUOTE ] /ubbthreads/images/graemlins/shocked.gif /ubbthreads/images/graemlins/confused.gif. .as always, no free lunch in ballistics.....anyone have contrary views to persuade me otherwise?