Mitch are you sure you are using 3.4gr of Titegroup on your 147's? That's what I use for a 147gr FMJ and I believe Russ was using 2.5gr on his 147 load. If so that sucker has got to be leaving a contrail out of your gun
POSITIVE! It makes 132pf out of my G17 at 60 degrees. It is a little hotter (138pf) at 40 degrees.