I have a pre 64 featherweight 270 that I tried 130 etips in and couldn't get better than 3" groups. I tried deeper seating depths, too. I have never tried 130 TTSX for comparison, but can't imagine them shooting any worse. I went to 140 accubonds and it shoots those into 0.5". 150 partitions are about 1.5". So, I guess my gun just doesn't like the etips. I have heard mention that in general, people seem to have better luck getting the TTSX to shoot without as much work.
