I have done both and they are both good. I feel that it is easier to get the 6.5-284 to shoot good myself. It is a very forgiving round. You can do it on a short action if it is one of the ones that will take 3" shells. The -06 version is long action only. Both feed fine. IF I were to do another -06 it would be the imp version. My COL is somewhere around 3.15" on my main hunting load. The one advantage that hasn't been discussed is that R17 works really good in the -284 case and has been ho-hum in the -06. I can get about 75 fps more velocity out of the 284 because of this. Pretty much the only powder I use in mine.
