I did a series of side by side tests today to see what I could shoot better, 115 gr. Winchester White Box or 147 gr JHP WWB. I was kind of suprised but not entirely by the results. Loading up a mag full of the 147 I settled into the recoil and rythm better than usual. Then a magazine of 115gr and I was a little shocked how much more muzzle flip and noise I was getting. Thats when I realized that there was the possibility that the 147gr was shooting subsonic because of the extra weight. Then I loaded every other round alternating 115gr and 147gr. I set up a mock plate stand. I found, that for me, that the followup after a 147gr round was alot faster than the 115gr... it could have all been in my head. But I thought I'd report on it anyways to see if anyone wanted to comment on what they've done. Still cheap ammo... and I'll have to do a few more boxes for compairison before I switch but I really liked the 147gr today. Good shoot'n.