My 6 x 47 Lapua is a 7 1/2" bat with a Bartlien barrel (83/4 to 8 gain) in a Mcmillian Tooley MBR stock smithed by Sid Goodling. Finished 2nd in light gun in the Williamsport World Open (to Jon Ammerman shooting a 6XC) and won the Pa State 1000 yard championships at Reade on October 2nd. Rifle consistently shoots into 6" at 1000 yards with decent conditions. Moderate load of 4350, Wolf SRM primers and 105 VLD's in a hard jam running about 3075 fps or so. Advantages over a .243 or 6MM are very slight but (IMHO) are there, none the less, to include excellent brass, long neck and a small primer.