I loaded some 168gr TSX using IMR 4064. Strarted at the bottom of chart and worked my way up in .4 grain increments. Seating depth at .005 off the lands as recommended. Shot them today with very poor results in all weights. I have used this powder before with the SMK's and found a node with no problem. I did put a new scope on this rifle so I am not sure if I am having a scope problem [it worked fine on another rifle] or a powder bullet combo issue. Any ideas? Is this the wrong powder & why ? Inspection of the brass shows no pressure problems only light hint of a mark on the 46gr brass. I did not have chrono out with me so cant help with any info there. Thanks.