just got it back from pac-nor.its built on a sako 75 action with a 26" super match tube-it is accurate -i put together some loads with the 180g nbt just to break in the barrel and it shot great.one group was 1/4 moa easy.the were 1/2 moa to 3/4 with different powder charges.what a sweet chambering.i do have one question-what are most of you 338rum shooters using for powder with the 250g bullets?tia-dave