im about 10 months late reporting anything new with the .358 short. between a full time job a part time bussiness and just life in general there is not enough time to shoot. finally got to the range a shoot the tsx bulllets. will do 3 shots just under an inch most of the time if i can do my part. ran them thru the chrony and got an average of 2386 fps. the only thing i dont understand yet is it takes 5 grains less of the same powder to run 2400 fps than my .358 idc on the wssm case. same powder, same mag primer. thats a lot of powder difference. tsx bullet cause more friction than sierra( therfor mor pressure)? the .358 barrel just a fast barrel? whatever the reason im happy with the results so far.