Hi! Looking at the .338-06 amazing effectivness and ability to work well with fast powders and short barrel I just thought it must be a way to do this with a 7mm. Im thinking of necking up a 6 or 6,5 caliber to 7mm and get velocitys around 2800-2900 with 140-160 grain bullets using a 20-22 inch barrel. Im so tired of all overbore 7mm calibers there must be a way to do a effective 7mm?