Re: Looking for info on .510 Whisper rilfe build or
my 510 is built on a phoenix long action but many other long actions will work. To answer your brass question you have to decide exactly what you will be building as there are several options that others have tried. I use cut/necked 338LM brass which is what the 510 Whisper was designed around. You will need a lathe to make the brass or have someone make it for you. The problem you might have is finding reloading dies as they can be hard to come by. CH4D offers dies but there can be a long wait at times