You guys are missing the point here. No you cannot make a 6.5 prc into a 7 prc the case is different. However you can neck up a 6.5 prc to 7mm. Why. Because you can use Lapua brass. You give up some case capacity. But it has proven to be capable at 1000 yds in competition pushing 180's.Well that's impossible. Unless you've invented a case stretcher.